2 * Copyright (c) 2006 Marius Strobl <marius@FreeBSD.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
30 #include <sys/param.h>
31 #include <sys/systm.h>
33 #include <sys/kernel.h>
34 #include <sys/module.h>
36 #include <sys/resource.h>
39 #include <dev/ofw/ofw_bus.h>
40 #include <dev/ofw/ofw_bus_subr.h>
41 #include <dev/ofw/openfirm.h>
43 #include <machine/bus.h>
44 #include <machine/bus_common.h>
45 #include <machine/resource.h>
54 #define UPA_CFG_UPA0 0x00 /* UPA0 config register */
55 #define UPA_CFG_UPA1 0x08 /* UPA1 config register */
56 #define UPA_CFG_IF 0x10 /* interface config register */
57 #define UPA_CFG_IF_RST 0x00
58 #define UPA_CFG_IF_POK_RST 0x02
59 #define UPA_CFG_IF_POK 0x03
60 #define UPA_CFG_ESTAR 0x18 /* Estar config register */
61 #define UPA_CFG_ESTAR_SPEED_FULL 0x01
62 #define UPA_CFG_ESTAR_SPEED_1_2 0x02
63 #define UPA_CFG_ESTAR_SPEED_1_64 0x40
65 #define UPA_INO_BASE 0x2a
79 struct ofw_bus_devinfo udi_obdinfo;
80 struct resource_list udi_rl;
84 struct resource *sc_res[UPA_NREG];
85 bus_space_tag_t sc_bt[UPA_NREG];
86 bus_space_handle_t sc_bh[UPA_NREG];
91 struct upa_ranges *sc_ranges;
94 #define UPA_READ(sc, reg, off) \
95 bus_space_read_8((sc)->sc_bt[(reg)], (sc)->sc_bh[(reg)], (off))
96 #define UPA_WRITE(sc, reg, off, val) \
97 bus_space_write_8((sc)->sc_bt[(reg)], (sc)->sc_bh[(reg)], (off), (val))
99 static device_probe_t upa_probe;
100 static device_attach_t upa_attach;
101 static bus_alloc_resource_t upa_alloc_resource;
102 static bus_setup_intr_t upa_setup_intr;
103 static bus_print_child_t upa_print_child;
104 static bus_probe_nomatch_t upa_probe_nomatch;
105 static bus_get_resource_list_t upa_get_resource_list;
106 static ofw_bus_get_devinfo_t upa_get_devinfo;
108 static struct upa_devinfo *upa_setup_dinfo(device_t, struct upa_softc *,
109 phandle_t, uint32_t);
110 static void upa_destroy_dinfo(struct upa_devinfo *);
111 static int upa_print_res(struct upa_devinfo *);
113 static device_method_t upa_methods[] = {
114 /* Device interface */
115 DEVMETHOD(device_probe, upa_probe),
116 DEVMETHOD(device_attach, upa_attach),
117 DEVMETHOD(device_shutdown, bus_generic_shutdown),
118 DEVMETHOD(device_suspend, bus_generic_suspend),
119 DEVMETHOD(device_resume, bus_generic_resume),
122 DEVMETHOD(bus_print_child, upa_print_child),
123 DEVMETHOD(bus_probe_nomatch, upa_probe_nomatch),
124 DEVMETHOD(bus_read_ivar, bus_generic_read_ivar),
125 DEVMETHOD(bus_write_ivar, bus_generic_write_ivar),
126 DEVMETHOD(bus_alloc_resource, upa_alloc_resource),
127 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
128 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
129 DEVMETHOD(bus_release_resource, bus_generic_rl_release_resource),
130 DEVMETHOD(bus_setup_intr, upa_setup_intr),
131 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
132 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
133 DEVMETHOD(bus_get_resource_list, upa_get_resource_list),
135 /* ofw_bus interface */
136 DEVMETHOD(ofw_bus_get_devinfo, upa_get_devinfo),
137 DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat),
138 DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model),
139 DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name),
140 DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node),
141 DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type),
146 static devclass_t upa_devclass;
148 DEFINE_CLASS_0(upa, upa_driver, upa_methods, sizeof(struct upa_softc));
149 DRIVER_MODULE(upa, nexus, upa_driver, upa_devclass, 0, 0);
152 upa_probe(device_t dev)
156 compat = ofw_bus_get_compat(dev);
157 if (compat != NULL && strcmp(ofw_bus_get_name(dev), "upa") == 0 &&
158 strcmp(compat, "upa64s") == 0) {
159 device_set_desc(dev, "UPA bridge");
160 return (BUS_PROBE_DEFAULT);
166 upa_attach(device_t dev)
168 struct upa_devinfo *udi;
169 struct upa_softc *sc;
170 phandle_t child, node;
175 device_t *children, schizo = NULL;
179 sc = device_get_softc(dev);
180 node = ofw_bus_get_node(dev);
181 for (i = UPA_CFG; i <= UPA_IMR2; i++) {
183 /* UPA_IMR1 is shared with the Schizo PCI bus B CSR bank. */
185 sc->sc_res[i] = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
186 &rid, (i == UPA_IMR1 ? RF_SHAREABLE : 0) | RF_ACTIVE);
187 if (sc->sc_res[i] == NULL) {
189 "could not allocate resource %d\n", i);
192 sc->sc_bt[i] = rman_get_bustag(sc->sc_res[i]);
193 sc->sc_bh[i] = rman_get_bushandle(sc->sc_res[i]);
196 * Workaround for the fact that rman(9) only allows to
197 * share resources of the same size.
200 if (device_get_children(device_get_parent(dev),
201 &children, &nchildren) != 0) {
202 device_printf(dev, "could not get children\n");
205 for (j = 0; j < nchildren; j++) {
206 if (ofw_bus_get_type(children[i]) != NULL &&
207 strcmp(ofw_bus_get_type(children[i]),
209 ofw_bus_get_compat(children[i]) != NULL &&
210 strcmp(ofw_bus_get_compat(children[i]),
211 "pci108e,8001") == 0 &&
212 ((bus_get_resource_start(children[i],
213 SYS_RES_MEMORY, 0) >> 20) & 1) == 1) {
214 schizo = children[i];
218 free(children, M_TEMP);
219 if (schizo == NULL) {
220 device_printf(dev, "could not find Schizo\n");
224 sc->sc_res[i] = bus_alloc_resource_any(schizo,
225 SYS_RES_MEMORY, &rid, RF_SHAREABLE | RF_ACTIVE);
226 if (sc->sc_res[i] == NULL) {
228 "could not allocate resource %d\n", i);
232 sc->sc_res[i] = bus_alloc_resource_any(dev,
233 SYS_RES_MEMORY, &rid, RF_ACTIVE);
234 if (sc->sc_res[i] == NULL) {
236 "could not allocate resource %d\n", i);
239 sc->sc_bt[i] = rman_get_bustag(sc->sc_res[i]);
240 sc->sc_bh[i] = rman_get_bushandle(sc->sc_res[i]);
242 bus_space_subregion(sc->sc_bt[i], sc->sc_bh[i],
243 bus_get_resource_start(dev, SYS_RES_MEMORY,
244 UPA_IMR1), bus_get_resource_count(dev,
245 SYS_RES_MEMORY, UPA_IMR1), &sc->sc_bh[i]);
249 if (OF_getprop(node, "portid", &portid, sizeof(portid)) == -1) {
250 device_printf(dev, "could not determine portid\n");
253 sc->sc_ign = (portid << INTMAP_IGN_SHIFT) & INTMAP_IGN_MASK;
255 sc->sc_nrange = OF_getprop_alloc(node, "ranges", sizeof(*sc->sc_ranges),
256 (void **)&sc->sc_ranges);
257 if (sc->sc_nrange == -1) {
258 device_printf(dev, "could not determine ranges\n");
262 /* Make sure the power level is appropriate for normal operation. */
263 if (UPA_READ(sc, UPA_CFG, UPA_CFG_IF) != UPA_CFG_IF_POK) {
265 device_printf(dev, "applying power\n");
266 UPA_WRITE(sc, UPA_CFG, UPA_CFG_ESTAR, UPA_CFG_ESTAR_SPEED_1_2);
267 UPA_WRITE(sc, UPA_CFG, UPA_CFG_ESTAR, UPA_CFG_ESTAR_SPEED_FULL);
268 (void)UPA_READ(sc, UPA_CFG, UPA_CFG_ESTAR);
269 UPA_WRITE(sc, UPA_CFG, UPA_CFG_IF, UPA_CFG_IF_POK_RST);
270 (void)UPA_READ(sc, UPA_CFG, UPA_CFG_IF);
272 UPA_WRITE(sc, UPA_CFG, UPA_CFG_IF, UPA_CFG_IF_POK);
273 (void)UPA_READ(sc, UPA_CFG, UPA_CFG_IF);
276 for (child = OF_child(node); child != 0; child = OF_peer(child)) {
278 * The `upa-portid' properties of the children are used as
279 * index for the interrupt mapping registers. Thus we also
280 * use it as device unit number in order to save on a unit
281 * member in the devinfo struct.
282 * The `upa-portid' properties are also used to make up the
283 * INOs of the children as the values contained in their
284 * `interrupts' properties are bogus.
286 if (OF_getprop(child, "upa-portid", &portid,
287 sizeof(portid)) == -1) {
289 "could not determine upa-portid of child 0x%lx\n",
290 (unsigned long)child);
295 "upa-portid %d of child 0x%lx invalid\n", portid,
296 (unsigned long)child);
299 if ((udi = upa_setup_dinfo(dev, sc, child, portid)) == NULL)
301 if ((cdev = device_add_child(dev, NULL, portid)) == NULL) {
302 device_printf(dev, "<%s>: device_add_child failed\n",
303 udi->udi_obdinfo.obd_name);
304 upa_destroy_dinfo(udi);
307 device_set_ivars(cdev, udi);
310 return (bus_generic_attach(dev));
313 for (i = UPA_CFG; i <= UPA_IMR2 && sc->sc_res[i] != NULL; i++)
315 bus_release_resource(dev, SYS_RES_MEMORY,
316 rman_get_rid(sc->sc_res[i]), sc->sc_res[i]);
318 bus_release_resource(i == UPA_IMR1 ? schizo : dev,
319 SYS_RES_MEMORY, rman_get_rid(sc->sc_res[i]),
326 upa_print_child(device_t dev, device_t child)
330 rv = bus_print_child_header(dev, child);
331 rv += upa_print_res(device_get_ivars(child));
332 rv += bus_print_child_footer(dev, child);
337 upa_probe_nomatch(device_t dev, device_t child)
341 device_printf(dev, "<%s>", ofw_bus_get_name(child));
342 upa_print_res(device_get_ivars(child));
343 type = ofw_bus_get_type(child);
344 printf(" type %s (no driver attached)\n",
345 type != NULL ? type : "unknown");
348 static struct resource *
349 upa_alloc_resource(device_t dev, device_t child, int type, int *rid,
350 u_long start, u_long end, u_long count, u_int flags)
352 struct resource_list *rl;
353 struct resource_list_entry *rle;
354 struct upa_softc *sc;
356 bus_addr_t cend, cstart;
357 int i, isdefault, passthrough;
359 isdefault = (start == 0UL && end == ~0UL);
360 passthrough = (device_get_parent(child) != dev);
361 sc = device_get_softc(dev);
362 rl = BUS_GET_RESOURCE_LIST(dev, child);
366 return (resource_list_alloc(rl, dev, child, type, rid, start,
370 rle = resource_list_find(rl, type, *rid);
373 if (rle->res != NULL)
374 panic("%s: resource entry is busy", __func__);
377 count = ulmax(count, rle->count);
378 end = ulmax(rle->end, start + count - 1);
381 for (i = 0; i < sc->sc_nrange; i++) {
382 cstart = sc->sc_ranges[i].child;
383 cend = cstart + sc->sc_ranges[i].size - 1;
384 if (start < cstart || start > cend)
386 if (end < cstart || end > cend)
388 start += sc->sc_ranges[i].parent - cstart;
389 end += sc->sc_ranges[i].parent - cstart;
390 rv = bus_generic_alloc_resource(dev, child, type, rid,
391 start, end, count, flags);
403 upa_setup_intr(device_t dev, device_t child, struct resource *ires, int flags,
404 driver_filter_t *filt, driver_intr_t *func, void *arg, void **cookiep)
406 struct upa_softc *sc;
411 sc = device_get_softc(dev);
412 imr = device_get_unit(child) == 0 ? UPA_IMR1 : UPA_IMR2;
413 intrmap = UPA_READ(sc, imr, 0x0);
414 if (INTVEC(intrmap) != INTVEC(rman_get_start(ires))) {
416 "invalid interrupt vector (0x%x != 0x%x)\n",
417 (unsigned int)INTVEC(intrmap),
418 (unsigned int)INTVEC(rman_get_start(ires)));
423 * The interrupts are pulse type and therefore automatically
424 * cleared. Thus we don't need to use a stub/wrapper like we
425 * do with the other sun4u host-to-<foo> bridges.
428 UPA_WRITE(sc, imr, 0x0, intrmap & ~INTMAP_V);
429 (void)UPA_READ(sc, imr, 0x0);
430 error = bus_generic_setup_intr(dev, child, ires, flags, filt,
434 UPA_WRITE(sc, imr, 0x0, INTMAP_ENABLE(intrmap, PCPU_GET(mid)));
435 (void)UPA_READ(sc, imr, 0x0);
440 static struct resource_list *
441 upa_get_resource_list(device_t dev, device_t child)
443 struct upa_devinfo *udi;
445 udi = device_get_ivars(child);
446 return (&udi->udi_rl);
449 static const struct ofw_bus_devinfo *
450 upa_get_devinfo(device_t dev, device_t child)
452 struct upa_devinfo *udi;
454 udi = device_get_ivars(child);
455 return (&udi->udi_obdinfo);
458 static struct upa_devinfo *
459 upa_setup_dinfo(device_t dev, struct upa_softc *sc, phandle_t node,
462 struct upa_devinfo *udi;
463 struct upa_regs *reg;
467 udi = malloc(sizeof(*udi), M_DEVBUF, M_WAITOK | M_ZERO);
468 if (ofw_bus_gen_setup_devinfo(&udi->udi_obdinfo, node) != 0) {
472 resource_list_init(&udi->udi_rl);
474 nreg = OF_getprop_alloc(node, "reg", sizeof(*reg), (void **)®);
476 device_printf(dev, "<%s>: incomplete\n",
477 udi->udi_obdinfo.obd_name);
480 for (i = 0; i < nreg; i++)
481 resource_list_add(&udi->udi_rl, SYS_RES_MEMORY, i, reg[i].phys,
482 reg[i].phys + reg[i].size - 1, reg[i].size);
483 free(reg, M_OFWPROP);
485 intr = (UPA_INO_BASE + portid) | sc->sc_ign;
486 resource_list_add(&udi->udi_rl, SYS_RES_IRQ, 0, intr, intr, 1);
491 upa_destroy_dinfo(udi);
496 upa_destroy_dinfo(struct upa_devinfo *dinfo)
499 resource_list_free(&dinfo->udi_rl);
500 ofw_bus_gen_destroy_devinfo(&dinfo->udi_obdinfo);
501 free(dinfo, M_DEVBUF);
505 upa_print_res(struct upa_devinfo *udi)
510 rv += resource_list_print_type(&udi->udi_rl, "mem", SYS_RES_MEMORY,
512 rv += resource_list_print_type(&udi->udi_rl, "irq", SYS_RES_IRQ,