2 * Copyright 2002 by Peter Grehan. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * 3. The name of the author may not be used to endorse or promote products
13 * derived from this software without specific prior written permission.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
20 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
21 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
22 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * Driver for KeyLargo/Pangea, the MacPPC south bridge ASIC.
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/kernel.h>
37 #include <sys/malloc.h>
38 #include <sys/module.h>
40 #include <machine/bus.h>
43 #include <machine/vmparam.h>
46 #include <machine/pmap.h>
48 #include <machine/resource.h>
50 #include <dev/ofw/ofw_bus.h>
51 #include <dev/ofw/ofw_bus_subr.h>
52 #include <dev/ofw/openfirm.h>
54 #include <powerpc/powermac/maciovar.h>
56 #include <dev/pci/pcivar.h>
57 #include <dev/pci/pcireg.h>
66 struct rman sc_mem_rman;
69 static MALLOC_DEFINE(M_MACIO, "macio", "macio device information");
71 static int macio_probe(device_t);
72 static int macio_attach(device_t);
73 static int macio_print_child(device_t dev, device_t child);
74 static void macio_probe_nomatch(device_t, device_t);
75 static struct resource *macio_alloc_resource(device_t, device_t, int, int *,
76 u_long, u_long, u_long, u_int);
77 static int macio_activate_resource(device_t, device_t, int, int,
79 static int macio_deactivate_resource(device_t, device_t, int, int,
81 static int macio_release_resource(device_t, device_t, int, int,
83 static struct resource_list *macio_get_resource_list (device_t, device_t);
84 static ofw_bus_get_devinfo_t macio_get_devinfo;
87 * Bus interface definition
89 static device_method_t macio_methods[] = {
90 /* Device interface */
91 DEVMETHOD(device_probe, macio_probe),
92 DEVMETHOD(device_attach, macio_attach),
93 DEVMETHOD(device_detach, bus_generic_detach),
94 DEVMETHOD(device_shutdown, bus_generic_shutdown),
95 DEVMETHOD(device_suspend, bus_generic_suspend),
96 DEVMETHOD(device_resume, bus_generic_resume),
99 DEVMETHOD(bus_print_child, macio_print_child),
100 DEVMETHOD(bus_probe_nomatch, macio_probe_nomatch),
101 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
102 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
104 DEVMETHOD(bus_alloc_resource, macio_alloc_resource),
105 DEVMETHOD(bus_release_resource, macio_release_resource),
106 DEVMETHOD(bus_activate_resource, macio_activate_resource),
107 DEVMETHOD(bus_deactivate_resource, macio_deactivate_resource),
108 DEVMETHOD(bus_get_resource_list, macio_get_resource_list),
110 /* ofw_bus interface */
111 DEVMETHOD(ofw_bus_get_devinfo, macio_get_devinfo),
112 DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat),
113 DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model),
114 DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name),
115 DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node),
116 DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type),
121 static driver_t macio_pci_driver = {
124 sizeof(struct macio_softc)
127 devclass_t macio_devclass;
129 DRIVER_MODULE(macio, pci, macio_pci_driver, macio_devclass, 0, 0);
132 * PCI ID search table
134 static struct macio_pci_dev {
137 } macio_pci_devlist[] = {
138 { 0x0017106b, "Paddington I/O Controller" },
139 { 0x0022106b, "KeyLargo I/O Controller" },
140 { 0x0025106b, "Pangea I/O Controller" },
141 { 0x003e106b, "Intrepid I/O Controller" },
146 * Devices to exclude from the probe
147 * XXX some of these may be required in the future...
149 #define MACIO_QUIRK_IGNORE 0x00000001
150 #define MACIO_QUIRK_CHILD_HAS_INTR 0x00000002
152 struct macio_quirk_entry {
157 static struct macio_quirk_entry macio_quirks[] = {
158 { "escc-legacy", MACIO_QUIRK_IGNORE },
159 { "timer", MACIO_QUIRK_IGNORE },
160 { "escc", MACIO_QUIRK_CHILD_HAS_INTR },
165 macio_get_quirks(const char *name)
167 struct macio_quirk_entry *mqe;
169 for (mqe = macio_quirks; mqe->mq_name != NULL; mqe++)
170 if (strcmp(name, mqe->mq_name) == 0)
171 return (mqe->mq_quirks);
177 * Add an interrupt to the dev's resource list if present
180 macio_add_intr(phandle_t devnode, struct macio_devinfo *dinfo)
187 if (dinfo->mdi_ninterrupts >= 6) {
188 printf("macio: device has more than 6 interrupts\n");
194 if (OF_getprop(devnode, "interrupt-parent", &iparent, sizeof(iparent)) == sizeof(iparent))
195 OF_getprop(iparent, "#interrupt-cells", &icells, sizeof(icells));
197 nintr = OF_getprop_alloc(devnode, "interrupts", sizeof(*intr),
200 nintr = OF_getprop_alloc(devnode, "AAPL,interrupts",
201 sizeof(*intr), (void **)&intr);
209 for (i = 0; i < nintr; i+=icells) {
210 resource_list_add(&dinfo->mdi_resources, SYS_RES_IRQ,
211 dinfo->mdi_ninterrupts, intr[i], intr[i], 1);
213 dinfo->mdi_interrupts[dinfo->mdi_ninterrupts] = intr[i];
214 dinfo->mdi_ninterrupts++;
220 macio_add_reg(phandle_t devnode, struct macio_devinfo *dinfo)
222 struct macio_reg *reg;
225 nreg = OF_getprop_alloc(devnode, "reg", sizeof(*reg), (void **)®);
229 for (i = 0; i < nreg; i++) {
230 resource_list_add(&dinfo->mdi_resources, SYS_RES_MEMORY, i,
231 reg[i].mr_base, reg[i].mr_base + reg[i].mr_size,
240 macio_probe(device_t dev)
245 devid = pci_get_devid(dev);
246 for (i = 0; macio_pci_devlist[i].mpd_desc != NULL; i++) {
247 if (devid == macio_pci_devlist[i].mpd_devid) {
248 device_set_desc(dev, macio_pci_devlist[i].mpd_desc);
257 * PCI attach: scan Open Firmware child nodes, and attach these as children
261 macio_attach(device_t dev)
263 struct macio_softc *sc;
264 struct macio_devinfo *dinfo;
272 sc = device_get_softc(dev);
273 root = sc->sc_node = OF_finddevice("mac-io");
276 * Locate the device node and it's base address
278 if (OF_getprop(root, "assigned-addresses",
279 reg, sizeof(reg)) < sizeof(reg)) {
283 sc->sc_base = reg[2];
284 sc->sc_size = MACIO_REG_SIZE;
286 sc->sc_mem_rman.rm_type = RMAN_ARRAY;
287 sc->sc_mem_rman.rm_descr = "MacIO Device Memory";
288 if (rman_init(&sc->sc_mem_rman) != 0) {
290 "failed to init mem range resources\n");
293 rman_manage_region(&sc->sc_mem_rman, 0, sc->sc_size);
296 * Iterate through the sub-devices
298 for (child = OF_child(root); child != 0; child = OF_peer(child)) {
299 dinfo = malloc(sizeof(*dinfo), M_MACIO, M_WAITOK | M_ZERO);
300 if (ofw_bus_gen_setup_devinfo(&dinfo->mdi_obdinfo, child) !=
302 free(dinfo, M_MACIO);
305 quirks = macio_get_quirks(dinfo->mdi_obdinfo.obd_name);
306 if ((quirks & MACIO_QUIRK_IGNORE) != 0) {
307 ofw_bus_gen_destroy_devinfo(&dinfo->mdi_obdinfo);
308 free(dinfo, M_MACIO);
311 resource_list_init(&dinfo->mdi_resources);
312 dinfo->mdi_ninterrupts = 0;
313 macio_add_intr(child, dinfo);
314 macio_add_reg(child, dinfo);
315 if ((quirks & MACIO_QUIRK_CHILD_HAS_INTR) != 0)
316 for (subchild = OF_child(child); subchild != 0;
317 subchild = OF_peer(subchild))
318 macio_add_intr(subchild, dinfo);
319 cdev = device_add_child(dev, NULL, -1);
321 device_printf(dev, "<%s>: device_add_child failed\n",
322 dinfo->mdi_obdinfo.obd_name);
323 resource_list_free(&dinfo->mdi_resources);
324 ofw_bus_gen_destroy_devinfo(&dinfo->mdi_obdinfo);
325 free(dinfo, M_MACIO);
328 device_set_ivars(cdev, dinfo);
331 return (bus_generic_attach(dev));
336 macio_print_child(device_t dev, device_t child)
338 struct macio_devinfo *dinfo;
339 struct resource_list *rl;
342 dinfo = device_get_ivars(child);
343 rl = &dinfo->mdi_resources;
345 retval += bus_print_child_header(dev, child);
347 retval += resource_list_print_type(rl, "mem", SYS_RES_MEMORY, "%#lx");
348 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
350 retval += bus_print_child_footer(dev, child);
357 macio_probe_nomatch(device_t dev, device_t child)
359 struct macio_devinfo *dinfo;
360 struct resource_list *rl;
364 dinfo = device_get_ivars(child);
365 rl = &dinfo->mdi_resources;
367 if ((type = ofw_bus_get_type(child)) == NULL)
369 device_printf(dev, "<%s, %s>", type, ofw_bus_get_name(child));
370 resource_list_print_type(rl, "mem", SYS_RES_MEMORY, "%#lx");
371 resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
372 printf(" (no driver attached)\n");
377 static struct resource *
378 macio_alloc_resource(device_t bus, device_t child, int type, int *rid,
379 u_long start, u_long end, u_long count, u_int flags)
381 struct macio_softc *sc;
385 bus_space_tag_t tagval;
386 u_long adjstart, adjend, adjcount;
387 struct macio_devinfo *dinfo;
388 struct resource_list_entry *rle;
390 sc = device_get_softc(bus);
391 dinfo = device_get_ivars(child);
393 needactivate = flags & RF_ACTIVE;
399 rle = resource_list_find(&dinfo->mdi_resources, SYS_RES_MEMORY,
402 device_printf(bus, "no rle for %s memory %d\n",
403 device_get_nameunit(child), *rid);
407 if (start < rle->start)
408 adjstart = rle->start;
409 else if (start > rle->end)
414 if (end < rle->start)
416 else if (end > rle->end)
421 adjcount = adjend - adjstart;
423 rm = &sc->sc_mem_rman;
425 tagval = PPC_BUS_SPACE_MEM;
429 rle = resource_list_find(&dinfo->mdi_resources, SYS_RES_IRQ,
432 if (dinfo->mdi_ninterrupts >= 6) {
434 "%s has more than 6 interrupts\n",
435 device_get_nameunit(child));
438 resource_list_add(&dinfo->mdi_resources, SYS_RES_IRQ,
439 dinfo->mdi_ninterrupts, start, start, 1);
441 dinfo->mdi_interrupts[dinfo->mdi_ninterrupts] = start;
442 dinfo->mdi_ninterrupts++;
445 return (resource_list_alloc(&dinfo->mdi_resources, bus, child,
446 type, rid, start, end, count, flags));
450 device_printf(bus, "unknown resource request from %s\n",
451 device_get_nameunit(child));
455 rv = rman_reserve_resource(rm, adjstart, adjend, adjcount, flags,
459 "failed to reserve resource %#lx - %#lx (%#lx) for %s\n",
460 adjstart, adjend, adjcount, device_get_nameunit(child));
464 rman_set_rid(rv, *rid);
465 rman_set_bustag(rv, tagval);
466 rman_set_bushandle(rv, rman_get_start(rv));
469 if (bus_activate_resource(child, type, *rid, rv) != 0) {
471 "failed to activate resource for %s\n",
472 device_get_nameunit(child));
473 rman_release_resource(rv);
483 macio_release_resource(device_t bus, device_t child, int type, int rid,
484 struct resource *res)
486 if (rman_get_flags(res) & RF_ACTIVE) {
487 int error = bus_deactivate_resource(child, type, rid, res);
492 return (rman_release_resource(res));
497 macio_activate_resource(device_t bus, device_t child, int type, int rid,
498 struct resource *res)
500 struct macio_softc *sc;
503 sc = device_get_softc(bus);
505 if (type == SYS_RES_IRQ)
506 return (bus_activate_resource(bus, type, rid, res));
508 if ((type == SYS_RES_MEMORY) || (type == SYS_RES_IOPORT)) {
509 p = pmap_mapdev((vm_offset_t)rman_get_start(res) + sc->sc_base,
510 (vm_size_t)rman_get_size(res));
513 rman_set_virtual(res, p);
514 rman_set_bushandle(res, (u_long)p);
517 return (rman_activate_resource(res));
522 macio_deactivate_resource(device_t bus, device_t child, int type, int rid,
523 struct resource *res)
526 * If this is a memory resource, unmap it.
528 if ((type == SYS_RES_MEMORY) || (type == SYS_RES_IOPORT)) {
531 psize = rman_get_size(res);
532 pmap_unmapdev((vm_offset_t)rman_get_virtual(res), psize);
535 return (rman_deactivate_resource(res));
539 static struct resource_list *
540 macio_get_resource_list (device_t dev, device_t child)
542 struct macio_devinfo *dinfo;
544 dinfo = device_get_ivars(child);
545 return (&dinfo->mdi_resources);
548 static const struct ofw_bus_devinfo *
549 macio_get_devinfo(device_t dev, device_t child)
551 struct macio_devinfo *dinfo;
553 dinfo = device_get_ivars(child);
554 return (&dinfo->mdi_obdinfo);