]> CyberLeo.Net >> Repos - FreeBSD/releng/7.2.git/blob - sys/powerpc/powermac/uninorth.c
Create releng/7.2 from stable/7 in preparation for 7.2-RELEASE.
[FreeBSD/releng/7.2.git] / sys / powerpc / powermac / uninorth.c
1 /*-
2  * Copyright (C) 2002 Benno Rice.
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
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.
13  *
14  * THIS SOFTWARE IS PROVIDED BY Benno Rice ``AS IS'' AND ANY EXPRESS OR
15  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17  * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
18  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
20  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
21  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
22  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
23  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24  *
25  * $FreeBSD$
26  */
27
28 #include <sys/param.h>
29 #include <sys/systm.h>
30 #include <sys/module.h>
31 #include <sys/bus.h>
32 #include <sys/conf.h>
33 #include <sys/kernel.h>
34
35 #include <dev/ofw/openfirm.h>
36 #include <dev/ofw/ofw_pci.h>
37
38 #include <dev/pci/pcivar.h>
39 #include <dev/pci/pcireg.h>
40
41 #include <machine/bus.h>
42 #include <machine/md_var.h>
43 #include <machine/nexusvar.h>
44 #include <machine/resource.h>
45
46 #include <sys/rman.h>
47
48 #include <powerpc/ofw/ofw_pci.h>
49 #include <powerpc/powermac/uninorthvar.h>
50
51 #include <vm/vm.h>
52 #include <vm/pmap.h>
53
54 #include "pcib_if.h"
55
56 #define UNINORTH_DEBUG  0
57
58 /*
59  * Device interface.
60  */
61 static int              uninorth_probe(device_t);
62 static int              uninorth_attach(device_t);
63
64 /*
65  * Bus interface.
66  */
67 static int              uninorth_read_ivar(device_t, device_t, int,
68                             uintptr_t *);
69 static struct           resource * uninorth_alloc_resource(device_t bus,
70                             device_t child, int type, int *rid, u_long start,
71                             u_long end, u_long count, u_int flags);
72 static int              uninorth_activate_resource(device_t bus, device_t child,
73                             int type, int rid, struct resource *res);
74
75 /*
76  * pcib interface.
77  */
78 static int              uninorth_maxslots(device_t);
79 static u_int32_t        uninorth_read_config(device_t, u_int, u_int, u_int,
80                             u_int, int);
81 static void             uninorth_write_config(device_t, u_int, u_int, u_int,
82                             u_int, u_int32_t, int);
83 static int              uninorth_route_interrupt(device_t, device_t, int);
84
85 /*
86  * Local routines.
87  */
88 static int              uninorth_enable_config(struct uninorth_softc *, u_int,
89                             u_int, u_int, u_int);
90 static void             unin_enable_gmac(void);
91
92 /*
93  * Driver methods.
94  */
95 static device_method_t  uninorth_methods[] = {
96         /* Device interface */
97         DEVMETHOD(device_probe,         uninorth_probe),
98         DEVMETHOD(device_attach,        uninorth_attach),
99
100         /* Bus interface */
101         DEVMETHOD(bus_print_child,      bus_generic_print_child),
102         DEVMETHOD(bus_read_ivar,        uninorth_read_ivar),
103         DEVMETHOD(bus_setup_intr,       bus_generic_setup_intr),
104         DEVMETHOD(bus_teardown_intr,    bus_generic_teardown_intr),
105         DEVMETHOD(bus_alloc_resource,   uninorth_alloc_resource),
106         DEVMETHOD(bus_activate_resource,        uninorth_activate_resource),
107
108         /* pcib interface */
109         DEVMETHOD(pcib_maxslots,        uninorth_maxslots),
110         DEVMETHOD(pcib_read_config,     uninorth_read_config),
111         DEVMETHOD(pcib_write_config,    uninorth_write_config),
112         DEVMETHOD(pcib_route_interrupt, uninorth_route_interrupt),
113
114         { 0, 0 }
115 };
116
117 static driver_t uninorth_driver = {
118         "pcib",
119         uninorth_methods,
120         sizeof(struct uninorth_softc)
121 };
122
123 static devclass_t       uninorth_devclass;
124
125 DRIVER_MODULE(uninorth, nexus, uninorth_driver, uninorth_devclass, 0, 0);
126
127 static int
128 uninorth_probe(device_t dev)
129 {
130         char    *type, *compatible;
131
132         type = nexus_get_device_type(dev);
133         compatible = nexus_get_compatible(dev);
134
135         if (type == NULL || compatible == NULL)
136                 return (ENXIO);
137
138         if (strcmp(type, "pci") != 0 || strcmp(compatible, "uni-north") != 0)
139                 return (ENXIO);
140
141         device_set_desc(dev, "Apple UniNorth Host-PCI bridge");
142         return (0);
143 }
144
145 static int
146 uninorth_attach(device_t dev)
147 {
148         struct          uninorth_softc *sc;
149         phandle_t       node;
150         phandle_t       child;
151         u_int32_t       reg[2], busrange[2];
152         struct          uninorth_range *rp, *io, *mem[2];
153         int             nmem, i;
154
155         node = nexus_get_node(dev);
156         sc = device_get_softc(dev);
157
158         if (OF_getprop(node, "reg", reg, sizeof(reg)) < 8)
159                 return (ENXIO);
160
161         if (OF_getprop(node, "bus-range", busrange, sizeof(busrange)) != 8)
162                 return (ENXIO);
163
164         sc->sc_dev = dev;
165         sc->sc_node = node;
166         sc->sc_addr = (vm_offset_t)pmap_mapdev(reg[0] + 0x800000, PAGE_SIZE);
167         sc->sc_data = (vm_offset_t)pmap_mapdev(reg[0] + 0xc00000, PAGE_SIZE);
168         sc->sc_bus = busrange[0];
169
170         bzero(sc->sc_range, sizeof(sc->sc_range));
171         sc->sc_nrange = OF_getprop(node, "ranges", sc->sc_range,
172             sizeof(sc->sc_range));
173
174         if (sc->sc_nrange == -1) {
175                 device_printf(dev, "could not get ranges\n");
176                 return (ENXIO);
177         }
178
179         sc->sc_range[6].pci_hi = 0;
180         io = NULL;
181         nmem = 0;
182
183         for (rp = sc->sc_range; rp->pci_hi != 0; rp++) {
184                 switch (rp->pci_hi & OFW_PCI_PHYS_HI_SPACEMASK) {
185                 case OFW_PCI_PHYS_HI_SPACE_CONFIG:
186                         break;
187                 case OFW_PCI_PHYS_HI_SPACE_IO:
188                         io = rp;
189                         break;
190                 case OFW_PCI_PHYS_HI_SPACE_MEM32:
191                         mem[nmem] = rp;
192                         nmem++;
193                         break;
194                 case OFW_PCI_PHYS_HI_SPACE_MEM64:
195                         break;
196                 }
197         }
198
199         if (io == NULL) {
200                 device_printf(dev, "can't find io range\n");
201                 return (ENXIO);
202         }
203         sc->sc_io_rman.rm_type = RMAN_ARRAY;
204         sc->sc_io_rman.rm_descr = "UniNorth PCI I/O Ports";
205         sc->sc_iostart = io->host;
206         if (rman_init(&sc->sc_io_rman) != 0 ||
207             rman_manage_region(&sc->sc_io_rman, io->pci_lo,
208             io->pci_lo + io->size_lo - 1) != 0) {
209                 device_printf(dev, "failed to set up io range management\n");
210                 return (ENXIO);
211         }
212
213         if (nmem == 0) {
214                 device_printf(dev, "can't find mem ranges\n");
215                 return (ENXIO);
216         }
217         sc->sc_mem_rman.rm_type = RMAN_ARRAY;
218         sc->sc_mem_rman.rm_descr = "UniNorth PCI Memory";
219         if (rman_init(&sc->sc_mem_rman) != 0) {
220                 device_printf(dev,
221                     "failed to init mem range resources\n");
222                 return (ENXIO);
223         }
224         for (i = 0; i < nmem; i++) {
225                 if (rman_manage_region(&sc->sc_mem_rman, mem[i]->pci_lo,
226                     mem[i]->pci_lo + mem[i]->size_lo - 1) != 0) {
227                         device_printf(dev,
228                             "failed to set up memory range management\n");
229                         return (ENXIO);
230                 }
231         }
232
233         /*
234          * Enable the GMAC Ethernet cell if Open Firmware says it is
235          * used.
236          */
237         for (child = OF_child(node); child; child = OF_peer(child)) {
238                 char compat[32];
239
240                 memset(compat, 0, sizeof(compat));
241                 OF_getprop(child, "compatible", compat, sizeof(compat));
242                 if (strcmp(compat, "gmac") == 0) {
243                         unin_enable_gmac();
244                 }
245         }
246
247         /*
248          * Write out the correct PIC interrupt values to config space
249          * of all devices on the bus. This has to be done after the GEM
250          * cell is enabled above.
251          */
252         ofw_pci_fixup(dev, sc->sc_bus, node);
253
254         device_add_child(dev, "pci", device_get_unit(dev));
255         return (bus_generic_attach(dev));
256 }
257
258 static int
259 uninorth_maxslots(device_t dev)
260 {
261
262         return (PCI_SLOTMAX);
263 }
264
265 static u_int32_t
266 uninorth_read_config(device_t dev, u_int bus, u_int slot, u_int func, u_int reg,
267     int width)
268 {
269         struct          uninorth_softc *sc;
270         vm_offset_t     caoff;
271
272         sc = device_get_softc(dev);
273         caoff = sc->sc_data + (reg & 0x07);
274
275         if (uninorth_enable_config(sc, bus, slot, func, reg) != 0) {
276                 switch (width) {
277                 case 1:
278                         return (in8rb(caoff));
279                         break;
280                 case 2:
281                         return (in16rb(caoff));
282                         break;
283                 case 4:
284                         return (in32rb(caoff));
285                         break;
286                 }
287         }
288
289         return (0xffffffff);
290 }
291
292 static void
293 uninorth_write_config(device_t dev, u_int bus, u_int slot, u_int func,
294     u_int reg, u_int32_t val, int width)
295 {
296         struct          uninorth_softc *sc;
297         vm_offset_t     caoff;
298
299         sc = device_get_softc(dev);
300         caoff = sc->sc_data + (reg & 0x07);
301
302         if (uninorth_enable_config(sc, bus, slot, func, reg)) {
303                 switch (width) {
304                 case 1:
305                         out8rb(caoff, val);
306                         break;
307                 case 2:
308                         out16rb(caoff, val);
309                         break;
310                 case 4:
311                         out32rb(caoff, val);
312                         break;
313                 }
314         }
315 }
316
317 static int
318 uninorth_route_interrupt(device_t bus, device_t dev, int pin)
319 {
320
321         return (0);
322 }
323
324 static int
325 uninorth_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
326 {
327         struct  uninorth_softc *sc;
328
329         sc = device_get_softc(dev);
330
331         switch (which) {
332         case PCIB_IVAR_DOMAIN:
333                 *result = device_get_unit(dev);
334                 return (0);
335         case PCIB_IVAR_BUS:
336                 *result = sc->sc_bus;
337                 return (0);
338         }
339
340         return (ENOENT);
341 }
342
343 static struct resource *
344 uninorth_alloc_resource(device_t bus, device_t child, int type, int *rid,
345     u_long start, u_long end, u_long count, u_int flags)
346 {
347         struct                  uninorth_softc *sc;
348         struct                  resource *rv;
349         struct                  rman *rm;
350         bus_space_tag_t         bt;
351         int                     needactivate;
352
353         needactivate = flags & RF_ACTIVE;
354         flags &= ~RF_ACTIVE;
355
356         sc = device_get_softc(bus);
357
358         switch (type) {
359         case SYS_RES_MEMORY:
360                 rm = &sc->sc_mem_rman;
361                 bt = PPC_BUS_SPACE_MEM;
362                 break;
363
364         case SYS_RES_IOPORT:
365                 rm = &sc->sc_io_rman;
366                 bt = PPC_BUS_SPACE_IO;
367                 break;
368
369         case SYS_RES_IRQ:
370                 return (bus_alloc_resource(bus, type, rid, start, end, count,
371                     flags));
372                 break;
373         default:
374                 device_printf(bus, "unknown resource request from %s\n",
375                     device_get_nameunit(child));
376                 return (NULL);
377         }
378
379         rv = rman_reserve_resource(rm, start, end, count, flags, child);
380         if (rv == NULL) {
381                 device_printf(bus, "failed to reserve resource for %s\n",
382                     device_get_nameunit(child));
383                 return (NULL);
384         }
385
386         rman_set_rid(rv, *rid);
387         rman_set_bustag(rv, bt);
388         rman_set_bushandle(rv, rman_get_start(rv));
389
390         if (needactivate) {
391                 if (bus_activate_resource(child, type, *rid, rv) != 0) {
392                         device_printf(bus,
393                             "failed to activate resource for %s\n",
394                             device_get_nameunit(child));
395                         rman_release_resource(rv);
396                         return (NULL);
397                 }
398         }
399
400         return (rv);
401 }
402
403 static int
404 uninorth_activate_resource(device_t bus, device_t child, int type, int rid,
405     struct resource *res)
406 {
407         void    *p;
408         struct  uninorth_softc *sc;
409
410         sc = device_get_softc(bus);
411
412         if (type == SYS_RES_IRQ)
413                 return (bus_activate_resource(bus, type, rid, res));
414
415         if (type == SYS_RES_MEMORY || type == SYS_RES_IOPORT) {
416                 vm_offset_t start;
417
418                 start = (vm_offset_t)rman_get_start(res);
419                 /*
420                  * For i/o-ports, convert the start address to the
421                  * uninorth PCI i/o window
422                  */
423                 if (type == SYS_RES_IOPORT)
424                         start += sc->sc_iostart;
425
426                 if (bootverbose)
427                         printf("uninorth mapdev: start %x, len %ld\n", start,
428                             rman_get_size(res));
429
430                 p = pmap_mapdev(start, (vm_size_t)rman_get_size(res));
431                 if (p == NULL)
432                         return (ENOMEM);
433                 rman_set_virtual(res, p);
434                 rman_set_bushandle(res, (u_long)p);
435         }
436
437         return (rman_activate_resource(res));
438 }
439
440 static int
441 uninorth_enable_config(struct uninorth_softc *sc, u_int bus, u_int slot,
442     u_int func, u_int reg)
443 {
444         uint32_t        cfgval;
445         uint32_t        pass;
446
447         if (resource_int_value(device_get_name(sc->sc_dev),
448                 device_get_unit(sc->sc_dev), "skipslot", &pass) == 0) {
449                 if (pass == slot)
450                         return (0);
451         }
452
453         if (sc->sc_bus == bus) {
454                 /*
455                  * No slots less than 11 on the primary bus
456                  */
457                 if (slot < 11)
458                         return (0);
459
460                 cfgval = (1 << slot) | (func << 8) | (reg & 0xfc);
461         } else {
462                 cfgval = (bus << 16) | (slot << 11) | (func << 8) |
463                     (reg & 0xfc) | 1;
464         }
465
466         do {
467                 out32rb(sc->sc_addr, cfgval);
468         } while (in32rb(sc->sc_addr) != cfgval);
469
470         return (1);
471 }
472
473 /*
474  * Driver to swallow UniNorth host bridges from the PCI bus side.
475  */
476 static int
477 unhb_probe(device_t dev)
478 {
479
480         if (pci_get_class(dev) == PCIC_BRIDGE &&
481             pci_get_subclass(dev) == PCIS_BRIDGE_HOST) {
482                 device_set_desc(dev, "Host to PCI bridge");
483                 device_quiet(dev);
484                 return (-10000);
485         }
486
487         return (ENXIO);
488 }
489
490 static int
491 unhb_attach(device_t dev)
492 {
493
494         return (0);
495 }
496
497 static device_method_t unhb_methods[] = {
498         /* Device interface */
499         DEVMETHOD(device_probe,         unhb_probe),
500         DEVMETHOD(device_attach,        unhb_attach),
501
502         { 0, 0 }
503 };
504
505 static driver_t unhb_driver = {
506         "unhb",
507         unhb_methods,
508         1,
509 };
510 static devclass_t unhb_devclass;
511
512 DRIVER_MODULE(unhb, pci, unhb_driver, unhb_devclass, 0, 0);
513
514
515 /*
516  * Small stub driver for the Uninorth chip itself, to allow setting
517  * of various parameters and cell enables
518  */
519 static struct unin_chip_softc *uncsc;
520
521 static void
522 unin_enable_gmac(void)
523 {
524         volatile u_int *clkreg;
525         u_int32_t tmpl;
526
527         if (uncsc == NULL)
528                 panic("unin_enable_gmac: device not found");
529
530         clkreg = (void *)(uncsc->sc_addr + UNIN_CLOCKCNTL);
531         tmpl = inl(clkreg);
532         tmpl |= UNIN_CLOCKCNTL_GMAC;
533         outl(clkreg, tmpl);
534 }
535
536 static int
537 unin_chip_probe(device_t dev)
538 {
539         char    *name;
540
541         name = nexus_get_name(dev);
542
543         if (name == NULL)
544                 return (ENXIO);
545
546         if (strcmp(name, "uni-n") != 0)
547                 return (ENXIO);
548
549         device_set_desc(dev, "Apple UniNorth System Controller");
550         return (0);
551 }
552
553 static int
554 unin_chip_attach(device_t dev)
555 {
556         phandle_t node;
557         u_int reg[2];
558
559         uncsc = device_get_softc(dev);
560         node = nexus_get_node(dev);
561
562         if (OF_getprop(node, "reg", reg, sizeof(reg)) < 8)
563                 return (ENXIO);
564
565         uncsc->sc_physaddr = reg[0];
566         uncsc->sc_size = reg[1];
567
568         /*
569          * Only map the first page, since that is where the registers
570          * of interest lie.
571          */
572         uncsc->sc_addr = (vm_offset_t) pmap_mapdev(reg[0], PAGE_SIZE);
573
574         uncsc->sc_version = *(u_int *)uncsc->sc_addr;
575         device_printf(dev, "Version %d\n", uncsc->sc_version);
576
577         return (0);
578 }
579
580 static device_method_t unin_chip_methods[] = {
581         /* Device interface */
582         DEVMETHOD(device_probe,         unin_chip_probe),
583         DEVMETHOD(device_attach,        unin_chip_attach),
584
585         { 0, 0 }
586 };
587
588 static driver_t unin_chip_driver = {
589         "unin",
590         unin_chip_methods,
591         sizeof(struct unin_chip_softc)
592 };
593
594 static devclass_t       unin_chip_devclass;
595
596 DRIVER_MODULE(unin, nexus, unin_chip_driver, unin_chip_devclass, 0, 0);
597
598
599
600