1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
|
/* $OpenBSD: ebus.c,v 1.11 2003/03/06 08:26:08 henric Exp $ */
/* $NetBSD: ebus.c,v 1.24 2001/07/25 03:49:54 eeh Exp $ */
/*
* Copyright (c) 1999, 2000 Matthew R. Green
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* UltraSPARC 5 and beyond ebus support.
*
* note that this driver is not complete:
* - ebus2 dma code is completely unwritten
* - interrupt establish is written and appears to work
* - bus map code is written and appears to work
*/
#ifdef DEBUG
#define EDB_PROM 0x01
#define EDB_CHILD 0x02
#define EDB_INTRMAP 0x04
#define EDB_BUSMAP 0x08
#define EDB_BUSDMA 0x10
#define EDB_INTR 0x20
int ebus_debug = 0x0;
#define DPRINTF(l, s) do { if (ebus_debug & l) printf s; } while (0)
#else
#define DPRINTF(l, s)
#endif
#include <sys/param.h>
#include <sys/conf.h>
#include <sys/device.h>
#include <sys/errno.h>
#include <sys/extent.h>
#include <sys/malloc.h>
#include <sys/systm.h>
#include <sys/time.h>
#define _SPARC_BUS_DMA_PRIVATE
#include <machine/bus.h>
#include <machine/autoconf.h>
#include <machine/openfirm.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcidevs.h>
#include <sparc64/dev/iommureg.h>
#include <sparc64/dev/iommuvar.h>
#include <sparc64/dev/psychoreg.h>
#include <sparc64/dev/psychovar.h>
#include <sparc64/dev/ebusreg.h>
#include <sparc64/dev/ebusvar.h>
#include <sparc64/sparc64/cache.h>
int ebus_match(struct device *, void *, void *);
void ebus_attach(struct device *, struct device *, void *);
struct cfattach ebus_ca = {
sizeof(struct ebus_softc), ebus_match, ebus_attach
};
struct cfdriver ebus_cd = {
NULL, "ebus", DV_DULL
};
int ebus_setup_attach_args(struct ebus_softc *, int,
struct ebus_attach_args *);
void ebus_destroy_attach_args(struct ebus_attach_args *);
int ebus_print(void *, const char *);
void ebus_find_ino(struct ebus_softc *, struct ebus_attach_args *);
int ebus_find_node(struct pci_attach_args *);
/*
* here are our bus space and bus dma routines.
*/
static paddr_t ebus_bus_mmap(bus_space_tag_t, bus_space_tag_t, bus_addr_t,
off_t, int, int);
static int _ebus_bus_map(bus_space_tag_t, bus_space_tag_t, bus_addr_t,
bus_size_t, int, bus_space_handle_t *);
static void *ebus_intr_establish(bus_space_tag_t, bus_space_tag_t, int, int,
int, int (*)(void *), void *);
bus_space_tag_t ebus_alloc_mem_tag(struct ebus_softc *, bus_space_tag_t);
bus_space_tag_t ebus_alloc_io_tag(struct ebus_softc *, bus_space_tag_t);
bus_space_tag_t _ebus_alloc_bus_tag(struct ebus_softc *sc, const char *,
bus_space_tag_t, int);
int
ebus_match(struct device *parent, void *match, void *aux)
{
struct pci_attach_args *pa = aux;
char name[10];
int node;
/* Only attach if there's a PROM node. */
node = PCITAG_NODE(pa->pa_tag);
if (node == -1) return (0);
/* Match a real ebus */
OF_getprop(node, "name", &name, sizeof(name));
if (PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE &&
PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SUN &&
PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SUN_EBUS &&
strcmp(name, "ebus") == 0)
return (1);
/* Or a real ebus III */
if (PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE &&
PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SUN &&
PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SUN_EBUSIII &&
strcmp(name, "ebus") == 0)
return (1);
/* Or a PCI-ISA bridge XXX I hope this is on-board. */
if (PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE &&
PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_BRIDGE_ISA) {
return (1);
}
return (0);
}
/*
* attach an ebus and all it's children. this code is modeled
* after the sbus code which does similar things.
*/
void
ebus_attach(struct device *parent, struct device *self, void *aux)
{
struct ebus_softc *sc = (struct ebus_softc *)self;
struct pci_attach_args *pa = aux;
struct ebus_attach_args eba;
struct ebus_interrupt_map_mask *immp;
int node, nmapmask, error;
printf("\n");
sc->sc_memtag = ebus_alloc_mem_tag(sc, pa->pa_memt);
sc->sc_iotag = ebus_alloc_io_tag(sc, pa->pa_iot);
sc->sc_dmatag = ebus_alloc_dma_tag(sc, pa->pa_dmat);
node = PCITAG_NODE(pa->pa_tag);
if (node == -1)
panic("could not find ebus node");
sc->sc_node = node;
/*
* fill in our softc with information from the prom
*/
sc->sc_intmap = NULL;
sc->sc_range = NULL;
error = getprop(node, "interrupt-map",
sizeof(struct ebus_interrupt_map),
&sc->sc_nintmap, (void **)&sc->sc_intmap);
switch (error) {
case 0:
immp = &sc->sc_intmapmask;
error = getprop(node, "interrupt-map-mask",
sizeof(struct ebus_interrupt_map_mask), &nmapmask,
(void **)&immp);
if (error)
panic("could not get ebus interrupt-map-mask");
if (nmapmask != 1)
panic("ebus interrupt-map-mask is broken");
break;
case ENOENT:
break;
default:
panic("ebus interrupt-map: error %d", error);
break;
}
error = getprop(node, "ranges", sizeof(struct ebus_ranges),
&sc->sc_nrange, (void **)&sc->sc_range);
if (error)
panic("ebus ranges: error %d", error);
/*
* now attach all our children
*/
DPRINTF(EDB_CHILD, ("ebus node %08x, searching children...\n", node));
for (node = firstchild(node); node; node = nextsibling(node)) {
char *name = getpropstring(node, "name");
if (ebus_setup_attach_args(sc, node, &eba) != 0) {
printf("ebus_attach: %s: incomplete\n", name);
continue;
} else {
DPRINTF(EDB_CHILD, ("- found child `%s', attaching\n",
eba.ea_name));
(void)config_found(self, &eba, ebus_print);
}
ebus_destroy_attach_args(&eba);
}
}
int
ebus_setup_attach_args(struct ebus_softc *sc, int node,
struct ebus_attach_args *ea)
{
int n, rv;
bzero(ea, sizeof(struct ebus_attach_args));
rv = getprop(node, "name", 1, &n, (void **)&ea->ea_name);
if (rv != 0)
return (rv);
ea->ea_name[n] = '\0';
ea->ea_node = node;
ea->ea_memtag = sc->sc_memtag;
ea->ea_iotag = sc->sc_iotag;
ea->ea_dmatag = sc->sc_dmatag;
rv = getprop(node, "reg", sizeof(struct ebus_regs), &ea->ea_nregs,
(void **)&ea->ea_regs);
if (rv)
return (rv);
rv = getprop(node, "address", sizeof(u_int32_t), &ea->ea_nvaddrs,
(void **)&ea->ea_vaddrs);
if (rv != ENOENT) {
if (rv)
return (rv);
if (ea->ea_nregs != ea->ea_nvaddrs)
printf("ebus loses: device %s: %d regs and %d addrs\n",
ea->ea_name, ea->ea_nregs, ea->ea_nvaddrs);
} else
ea->ea_nvaddrs = 0;
if (getprop(node, "interrupts", sizeof(u_int32_t), &ea->ea_nintrs,
(void **)&ea->ea_intrs))
ea->ea_nintrs = 0;
else
ebus_find_ino(sc, ea);
return (0);
}
void
ebus_destroy_attach_args(struct ebus_attach_args *ea)
{
if (ea->ea_name)
free((void *)ea->ea_name, M_DEVBUF);
if (ea->ea_regs)
free((void *)ea->ea_regs, M_DEVBUF);
if (ea->ea_intrs)
free((void *)ea->ea_intrs, M_DEVBUF);
if (ea->ea_vaddrs)
free((void *)ea->ea_vaddrs, M_DEVBUF);
}
int
ebus_print(void *aux, const char *p)
{
struct ebus_attach_args *ea = aux;
int i;
if (p)
printf("%s at %s", ea->ea_name, p);
for (i = 0; i < ea->ea_nregs; i++)
printf("%s %x-%x", i == 0 ? " addr" : ",",
ea->ea_regs[i].lo,
ea->ea_regs[i].lo + ea->ea_regs[i].size - 1);
for (i = 0; i < ea->ea_nintrs; i++)
printf(" ipl %d", ea->ea_intrs[i]);
return (UNCONF);
}
/*
* find the INO values for each interrupt and fill them in.
*
* for each "reg" property of this device, mask it's hi and lo
* values with the "interrupt-map-mask"'s hi/lo values, and also
* mask the interrupt number with the interrupt mask. search the
* "interrupt-map" list for matching values of hi, lo and interrupt
* to give the INO for this interrupt.
*/
void
ebus_find_ino(struct ebus_softc *sc, struct ebus_attach_args *ea)
{
u_int32_t hi, lo, intr;
int i, j, k;
if (sc->sc_nintmap == 0) {
for (i = 0; i < ea->ea_nintrs; i++) {
OF_mapintr(ea->ea_node, &ea->ea_intrs[i],
sizeof(ea->ea_intrs[0]),
sizeof(ea->ea_intrs[0]));
}
return;
}
DPRINTF(EDB_INTRMAP,
("ebus_find_ino: searching %d interrupts", ea->ea_nintrs));
for (j = 0; j < ea->ea_nintrs; j++) {
intr = ea->ea_intrs[j] & sc->sc_intmapmask.intr;
DPRINTF(EDB_INTRMAP,
("; intr %x masked to %x", ea->ea_intrs[j], intr));
for (i = 0; i < ea->ea_nregs; i++) {
hi = ea->ea_regs[i].hi & sc->sc_intmapmask.hi;
lo = ea->ea_regs[i].lo & sc->sc_intmapmask.lo;
DPRINTF(EDB_INTRMAP,
("; reg hi.lo %08x.%08x masked to %08x.%08x",
ea->ea_regs[i].hi, ea->ea_regs[i].lo, hi, lo));
for (k = 0; k < sc->sc_nintmap; k++) {
DPRINTF(EDB_INTRMAP,
("; checking hi.lo %08x.%08x intr %x",
sc->sc_intmap[k].hi, sc->sc_intmap[k].lo,
sc->sc_intmap[k].intr));
if (hi == sc->sc_intmap[k].hi &&
lo == sc->sc_intmap[k].lo &&
intr == sc->sc_intmap[k].intr) {
ea->ea_intrs[j] =
sc->sc_intmap[k].cintr;
DPRINTF(EDB_INTRMAP,
("; FOUND IT! changing to %d\n",
sc->sc_intmap[k].cintr));
goto next_intr;
}
}
}
next_intr:;
}
}
bus_space_tag_t
ebus_alloc_mem_tag(struct ebus_softc *sc, bus_space_tag_t parent)
{
return (_ebus_alloc_bus_tag(sc, "mem", parent,
0x02)); /* 32-bit mem space (where's the #define???) */
}
bus_space_tag_t
ebus_alloc_io_tag(struct ebus_softc *sc, bus_space_tag_t parent)
{
return (_ebus_alloc_bus_tag(sc, "io", parent,
0x01)); /* IO space (where's the #define???) */
}
/*
* bus space and bus dma below here
*/
bus_space_tag_t
_ebus_alloc_bus_tag(struct ebus_softc *sc, const char *name,
bus_space_tag_t parent, int ss)
{
struct sparc_bus_space_tag *bt;
bt = malloc(sizeof(*bt), M_DEVBUF, M_NOWAIT);
if (bt == NULL)
panic("could not allocate ebus bus tag");
bzero(bt, sizeof *bt);
snprintf(bt->name, sizeof(bt->name), "%s_%s",
sc->sc_dev.dv_xname, name);
bt->cookie = sc;
bt->parent = parent;
bt->default_type = ss;
bt->asi = parent->asi;
bt->sasi = parent->sasi;
bt->sparc_bus_map = _ebus_bus_map;
bt->sparc_bus_mmap = ebus_bus_mmap;
bt->sparc_intr_establish = ebus_intr_establish;
return (bt);
}
bus_dma_tag_t
ebus_alloc_dma_tag(struct ebus_softc *sc, bus_dma_tag_t pdt)
{
bus_dma_tag_t dt;
dt = (bus_dma_tag_t)
malloc(sizeof(struct sparc_bus_dma_tag), M_DEVBUF, M_NOWAIT);
if (dt == NULL)
panic("could not allocate ebus dma tag");
bzero(dt, sizeof *dt);
dt->_cookie = sc;
dt->_parent = pdt;
sc->sc_dmatag = dt;
return (dt);
}
/*
* bus space support. <sparc64/dev/psychoreg.h> has a discussion
* about PCI physical addresses, which also applies to ebus.
*/
static int
_ebus_bus_map(bus_space_tag_t t, bus_space_tag_t t0, bus_addr_t offset,
bus_size_t size, int flags, bus_space_handle_t *hp)
{
struct ebus_softc *sc = t->cookie;
bus_addr_t hi, lo;
int i;
DPRINTF(EDB_BUSMAP,
("\n_ebus_bus_map: type %d off %016llx sz %x flags %d",
(int)t->default_type, (unsigned long long)offset, (int)size,
(int)flags));
if (t->parent == 0 || t->parent->sparc_bus_map == 0) {
printf("\n_ebus_bus_map: invalid parent");
return (EINVAL);
}
t = t->parent;
if (flags & BUS_SPACE_MAP_PROMADDRESS) {
return ((*t->sparc_bus_map)
(t, t0, offset, size, flags, hp));
}
hi = offset >> 32UL;
lo = offset & 0xffffffff;
DPRINTF(EDB_BUSMAP, (" (hi %08x lo %08x)", (u_int)hi, (u_int)lo));
for (i = 0; i < sc->sc_nrange; i++) {
bus_addr_t pciaddr;
if (hi != sc->sc_range[i].child_hi)
continue;
if (lo < sc->sc_range[i].child_lo ||
(lo + size) >
(sc->sc_range[i].child_lo + sc->sc_range[i].size))
continue;
if(((sc->sc_range[i].phys_hi >> 24) & 3) != t->default_type)
continue;
pciaddr = ((bus_addr_t)sc->sc_range[i].phys_mid << 32UL) |
sc->sc_range[i].phys_lo;
pciaddr += lo;
DPRINTF(EDB_BUSMAP,
("\n_ebus_bus_map: mapping space %x paddr offset %qx "
"pciaddr %qx\n", (int)t->default_type,
(unsigned long long)offset, (unsigned long long)pciaddr));
/* pass it onto the psycho */
return ((*t->sparc_bus_map)(t, t0, pciaddr, size, flags, hp));
}
DPRINTF(EDB_BUSMAP, (": FAILED\n"));
return (EINVAL);
}
static paddr_t
ebus_bus_mmap(bus_space_tag_t t, bus_space_tag_t t0, bus_addr_t paddr,
off_t off, int prot, int flags)
{
bus_addr_t offset = paddr;
struct ebus_softc *sc = t->cookie;
int i;
if (t->parent == 0 || t->parent->sparc_bus_mmap == 0) {
printf("\nebus_bus_mmap: invalid parent");
return (-1);
}
t = t->parent;
for (i = 0; i < sc->sc_nrange; i++) {
bus_addr_t paddr =
((bus_addr_t)sc->sc_range[i].child_hi << 32) |
sc->sc_range[i].child_lo;
if (offset != paddr)
continue;
DPRINTF(EDB_BUSMAP, ("\n_ebus_bus_mmap: mapping paddr %qx\n",
(unsigned long long)paddr));
return ((*t->sparc_bus_mmap)(t, t0, paddr, off, prot, flags));
}
return (-1);
}
/*
* install an interrupt handler for a PCI device
*/
void *
ebus_intr_establish(bus_space_tag_t t, bus_space_tag_t t0, int pri, int level,
int flags, int (*handler)(void *), void *arg)
{
if (t->parent == 0 || t->parent->sparc_bus_mmap == 0) {
printf("\nebus_bus_mmap: invalid parent");
return (NULL);
}
t = t->parent;
return ((*t->sparc_intr_establish)(t, t0, pri, level, flags,
handler, arg));
}
|