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1/* $NetBSD: Locore.c,v 1.7 2000/08/20 07:04:59 tsubai Exp $ */
2
3/*-
4 * Copyright (C) 1995, 1996 Wolfgang Solfrank.
5 * Copyright (C) 1995, 1996 TooLs GmbH.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without

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51 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
52 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
53 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
54 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
55 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
56 */
57
58#include <sys/cdefs.h>
59__FBSDID("$FreeBSD: head/sys/dev/ofw/openfirm.c 171265 2007-07-06 00:47:44Z peter $");
59__FBSDID("$FreeBSD: head/sys/dev/ofw/ofw_standard.c 186347 2008-12-20 00:33:10Z nwhitehorn $");
60
61#include <sys/param.h>
62#include <sys/kernel.h>
63#include <sys/malloc.h>
64#include <sys/systm.h>
65
66#include <machine/stdarg.h>
67
68#include <dev/ofw/openfirm.h>
69#include <dev/ofw/ofwvar.h>
70#include "ofw_if.h"
71
70MALLOC_DEFINE(M_OFWPROP, "openfirm", "Open Firmware properties");
72static void ofw_std_init(ofw_t ofw, void *openfirm);
73static int ofw_std_test(ofw_t ofw, const char *name);
74static int ofw_std_interpret(ofw_t ofw, const char *cmd, int nreturns,
75 unsigned long *returns);
76static phandle_t ofw_std_peer(ofw_t ofw, phandle_t node);
77static phandle_t ofw_std_child(ofw_t ofw, phandle_t node);
78static phandle_t ofw_std_parent(ofw_t ofw, phandle_t node);
79static phandle_t ofw_std_instance_to_package(ofw_t ofw, ihandle_t instance);
80static ssize_t ofw_std_getproplen(ofw_t ofw, phandle_t package,
81 const char *propname);
82static ssize_t ofw_std_getprop(ofw_t ofw, phandle_t package,
83 const char *propname, void *buf, size_t buflen);
84static int ofw_std_nextprop(ofw_t ofw, phandle_t package, const char *previous,
85 char *buf, size_t);
86static int ofw_std_setprop(ofw_t ofw, phandle_t package, char *propname,
87 void *buf, size_t len);
88static ssize_t ofw_std_canon(ofw_t ofw, const char *device, char *buf,
89 size_t len);
90static phandle_t ofw_std_finddevice(ofw_t ofw, const char *device);
91static ssize_t ofw_std_instance_to_path(ofw_t ofw, ihandle_t instance,
92 char *buf, size_t len);
93static ssize_t ofw_std_package_to_path(ofw_t ofw, phandle_t package, char *buf,
94 size_t len);
95static int ofw_std_call_method(ofw_t ofw, ihandle_t instance,
96 const char *method, int nargs, int nreturns,
97 unsigned long *args_and_returns);
98static ihandle_t ofw_std_open(ofw_t ofw, const char *device);
99static void ofw_std_close(ofw_t ofw, ihandle_t instance);
100static ssize_t ofw_std_read(ofw_t ofw, ihandle_t instance, void *addr,
101 size_t len);
102static ssize_t ofw_std_write(ofw_t ofw, ihandle_t instance, const void *addr,
103 size_t len);
104static int ofw_std_seek(ofw_t ofw, ihandle_t instance, u_int64_t pos);
105static caddr_t ofw_std_claim(ofw_t ofw, void *virt, size_t size, u_int align);
106static void ofw_std_release(ofw_t ofw, void *virt, size_t size);
107static void ofw_std_enter(ofw_t ofw);
108static void ofw_std_exit(ofw_t ofw);
109
72static ihandle_t stdout;
110static ofw_method_t ofw_std_methods[] = {
111 OFWMETHOD(ofw_init, ofw_std_init),
112 OFWMETHOD(ofw_peer, ofw_std_peer),
113 OFWMETHOD(ofw_child, ofw_std_child),
114 OFWMETHOD(ofw_parent, ofw_std_parent),
115 OFWMETHOD(ofw_instance_to_package, ofw_std_instance_to_package),
116 OFWMETHOD(ofw_getproplen, ofw_std_getproplen),
117 OFWMETHOD(ofw_getprop, ofw_std_getprop),
118 OFWMETHOD(ofw_nextprop, ofw_std_nextprop),
119 OFWMETHOD(ofw_setprop, ofw_std_setprop),
120 OFWMETHOD(ofw_canon, ofw_std_canon),
121 OFWMETHOD(ofw_finddevice, ofw_std_finddevice),
122 OFWMETHOD(ofw_instance_to_path, ofw_std_instance_to_path),
123 OFWMETHOD(ofw_package_to_path, ofw_std_package_to_path),
124
74/* Initialiser */
125 OFWMETHOD(ofw_test, ofw_std_test),
126 OFWMETHOD(ofw_call_method, ofw_std_call_method),
127 OFWMETHOD(ofw_interpret, ofw_std_interpret),
128 OFWMETHOD(ofw_open, ofw_std_open),
129 OFWMETHOD(ofw_close, ofw_std_close),
130 OFWMETHOD(ofw_read, ofw_std_read),
131 OFWMETHOD(ofw_write, ofw_std_write),
132 OFWMETHOD(ofw_seek, ofw_std_seek),
133 OFWMETHOD(ofw_claim, ofw_std_claim),
134 OFWMETHOD(ofw_release, ofw_std_release),
135 OFWMETHOD(ofw_enter, ofw_std_enter),
136 OFWMETHOD(ofw_exit, ofw_std_exit),
137
76void
77OF_init(int (*openfirm)(void *))
78{
79 phandle_t chosen;
138 { 0, 0 }
139};
140
81 set_openfirm_callback(openfirm);
82 if ((chosen = OF_finddevice("/chosen")) == -1)
83 OF_exit();
84 if (OF_getprop(chosen, "stdout", &stdout, sizeof(stdout)) == -1)
85 OF_exit();
86}
141static ofw_def_t ofw_std = {
142 OFW_STD_DIRECT,
143 ofw_std_methods,
144 0
145};
146OFW_DEF(ofw_std);
147
88void
89OF_printf(const char *fmt, ...)
90{
91 va_list va;
92 char buf[1024];
148static int (*openfirmware)(void *);
149
94 va_start(va, fmt);
95 vsprintf(buf, fmt, va);
96 OF_write(stdout, buf, strlen(buf));
97 va_end(va);
150/* Initialiser */
151
152static void
153ofw_std_init(ofw_t ofw, void *openfirm)
154{
155 openfirmware = (int (*)(void *))openfirm;
156}
157
158/*
159 * Generic functions
160 */
161
162/* Test to see if a service exists. */
105int
106OF_test(char *name)
163static int
164ofw_std_test(ofw_t ofw, const char *name)
165{
166 static struct {
167 cell_t name;
168 cell_t nargs;
169 cell_t nreturns;
170 cell_t service;
171 cell_t missing;
172 } args = {
173 (cell_t)"test",
174 1,
175 1,
176 };
177
178 args.service = (cell_t)name;
179 if (openfirmware(&args) == -1)
180 return (-1);
181 return (args.missing);
182}
183
126int
127OF_interpret(char *cmd, int nreturns, ...)
184static int
185ofw_std_interpret(ofw_t ofw, const char *cmd, int nreturns,
186 unsigned long *returns)
187{
129 va_list ap;
188 static struct {
189 cell_t name;
190 cell_t nargs;
191 cell_t nreturns;
192 cell_t slot[16];
193 } args = {
194 (cell_t)"interpret",
195 1,
196 };
197 cell_t status;
140 int i = 0;
198 int i = 0, j = 0;
199
142 va_start(ap, nreturns);
200 args.nreturns = ++nreturns;
201 args.slot[i++] = (cell_t)cmd;
145 while (i < 1)
146 args.slot[i++] = va_arg(ap, cell_t);
202 if (openfirmware(&args) == -1) {
148 va_end(ap);
203 return (-1);
204 }
205 status = args.slot[i++];
206 while (i < 1 + nreturns)
153 *va_arg(ap, cell_t *) = args.slot[i++];
154 va_end(ap);
207 returns[j] = args.slot[i++];
208 return (status);
209}
210
158/* Return firmware millisecond count. */
159int
160OF_milliseconds()
161{
162 static struct {
163 cell_t name;
164 cell_t nargs;
165 cell_t nreturns;
166 cell_t ms;
167 } args = {
168 (cell_t)"milliseconds",
169 0,
170 1,
171 };
172
173 openfirmware(&args);
174 return (args.ms);
175}
176
211/*
212 * Device tree functions
213 */
214
215/* Return the next sibling of this node or 0. */
182phandle_t
183OF_peer(phandle_t node)
216static phandle_t
217ofw_std_peer(ofw_t ofw, phandle_t node)
218{
219 static struct {
220 cell_t name;
221 cell_t nargs;
222 cell_t nreturns;
223 cell_t node;
224 cell_t next;
225 } args = {

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230
231 args.node = node;
232 if (openfirmware(&args) == -1)
233 return (-1);
234 return (args.next);
235}
236
237/* Return the first child of this node or 0. */
204phandle_t
205OF_child(phandle_t node)
238static phandle_t
239ofw_std_child(ofw_t ofw, phandle_t node)
240{
241 static struct {
242 cell_t name;
243 cell_t nargs;
244 cell_t nreturns;
245 cell_t node;
246 cell_t child;
247 } args = {

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252
253 args.node = node;
254 if (openfirmware(&args) == -1)
255 return (-1);
256 return (args.child);
257}
258
259/* Return the parent of this node or 0. */
226phandle_t
227OF_parent(phandle_t node)
260static phandle_t
261ofw_std_parent(ofw_t ofw, phandle_t node)
262{
263 static struct {
264 cell_t name;
265 cell_t nargs;
266 cell_t nreturns;
267 cell_t node;
268 cell_t parent;
269 } args = {

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274
275 args.node = node;
276 if (openfirmware(&args) == -1)
277 return (-1);
278 return (args.parent);
279}
280
281/* Return the package handle that corresponds to an instance handle. */
248phandle_t
249OF_instance_to_package(ihandle_t instance)
282static phandle_t
283ofw_std_instance_to_package(ofw_t ofw, ihandle_t instance)
284{
285 static struct {
286 cell_t name;
287 cell_t nargs;
288 cell_t nreturns;
289 cell_t instance;
290 cell_t package;
291 } args = {

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296
297 args.instance = instance;
298 if (openfirmware(&args) == -1)
299 return (-1);
300 return (args.package);
301}
302
303/* Get the length of a property of a package. */
270int
271OF_getproplen(phandle_t package, char *propname)
304static ssize_t
305ofw_std_getproplen(ofw_t ofw, phandle_t package, const char *propname)
306{
307 static struct {
308 cell_t name;
309 cell_t nargs;
310 cell_t nreturns;
311 cell_t package;
312 cell_t propname;
313 cell_t proplen;

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320 args.package = package;
321 args.propname = (cell_t)propname;
322 if (openfirmware(&args) == -1)
323 return (-1);
324 return (args.proplen);
325}
326
327/* Get the value of a property of a package. */
294int
295OF_getprop(phandle_t package, char *propname, void *buf, int buflen)
328static ssize_t
329ofw_std_getprop(ofw_t ofw, phandle_t package, const char *propname, void *buf,
330 size_t buflen)
331{
332 static struct {
333 cell_t name;
334 cell_t nargs;
335 cell_t nreturns;
336 cell_t package;
337 cell_t propname;
338 cell_t buf;

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348 args.propname = (cell_t)propname;
349 args.buf = (cell_t)buf;
350 args.buflen = buflen;
351 if (openfirmware(&args) == -1)
352 return (-1);
353 return (args.size);
354}
355
321/*
322 * Store the value of a property of a package into newly allocated memory
323 * (using the M_OFWPROP malloc pool and M_WAITOK). elsz is the size of a
324 * single element, the number of elements is return in number.
325 */
326int
327OF_getprop_alloc(phandle_t package, char *propname, int elsz, void **buf)
328{
329 int len;
330
331 *buf = NULL;
332 if ((len = OF_getproplen(package, propname)) == -1 ||
333 len % elsz != 0)
334 return (-1);
335
336 *buf = malloc(len, M_OFWPROP, M_WAITOK);
337 if (OF_getprop(package, propname, *buf, len) == -1) {
338 free(*buf, M_OFWPROP);
339 *buf = NULL;
340 return (-1);
341 }
342 return (len / elsz);
343}
344
356/* Get the next property of a package. */
346int
347OF_nextprop(phandle_t package, char *previous, char *buf)
357static int
358ofw_std_nextprop(ofw_t ofw, phandle_t package, const char *previous, char *buf,
359 size_t size)
360{
361 static struct {
362 cell_t name;
363 cell_t nargs;
364 cell_t nreturns;
365 cell_t package;
366 cell_t previous;
367 cell_t buf;

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377 args.buf = (cell_t)buf;
378 if (openfirmware(&args) == -1)
379 return (-1);
380 return (args.flag);
381}
382
383/* Set the value of a property of a package. */
384/* XXX Has a bug on FirePower */
373int
374OF_setprop(phandle_t package, char *propname, void *buf, int len)
385static int
386ofw_std_setprop(ofw_t ofw, phandle_t package, char *propname, void *buf,
387 size_t len)
388{
389 static struct {
390 cell_t name;
391 cell_t nargs;
392 cell_t nreturns;
393 cell_t package;
394 cell_t propname;
395 cell_t buf;

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406 args.buf = (cell_t)buf;
407 args.len = len;
408 if (openfirmware(&args) == -1)
409 return (-1);
410 return (args.size);
411}
412
413/* Convert a device specifier to a fully qualified pathname. */
401int
402OF_canon(const char *device, char *buf, int len)
414static ssize_t
415ofw_std_canon(ofw_t ofw, const char *device, char *buf, size_t len)
416{
417 static struct {
418 cell_t name;
419 cell_t nargs;
420 cell_t nreturns;
421 cell_t device;
422 cell_t buf;
423 cell_t len;

--- 8 unchanged lines hidden (view full) ---

432 args.buf = (cell_t)buf;
433 args.len = len;
434 if (openfirmware(&args) == -1)
435 return (-1);
436 return (args.size);
437}
438
439/* Return a package handle for the specified device. */
427phandle_t
428OF_finddevice(const char *device)
440static phandle_t
441ofw_std_finddevice(ofw_t ofw, const char *device)
442{
443 static struct {
444 cell_t name;
445 cell_t nargs;
446 cell_t nreturns;
447 cell_t device;
448 cell_t package;
449 } args = {

--- 4 unchanged lines hidden (view full) ---

454
455 args.device = (cell_t)device;
456 if (openfirmware(&args) == -1)
457 return (-1);
458 return (args.package);
459}
460
461/* Return the fully qualified pathname corresponding to an instance. */
449int
450OF_instance_to_path(ihandle_t instance, char *buf, int len)
462static ssize_t
463ofw_std_instance_to_path(ofw_t ofw, ihandle_t instance, char *buf, size_t len)
464{
465 static struct {
466 cell_t name;
467 cell_t nargs;
468 cell_t nreturns;
469 cell_t instance;
470 cell_t buf;
471 cell_t len;

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480 args.buf = (cell_t)buf;
481 args.len = len;
482 if (openfirmware(&args) == -1)
483 return (-1);
484 return (args.size);
485}
486
487/* Return the fully qualified pathname corresponding to a package. */
475int
476OF_package_to_path(phandle_t package, char *buf, int len)
488static ssize_t
489ofw_std_package_to_path(ofw_t ofw, phandle_t package, char *buf, size_t len)
490{
491 static struct {
492 cell_t name;
493 cell_t nargs;
494 cell_t nreturns;
495 cell_t package;
496 cell_t buf;
497 cell_t len;

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506 args.buf = (cell_t)buf;
507 args.len = len;
508 if (openfirmware(&args) == -1)
509 return (-1);
510 return (args.size);
511}
512
513/* Call the method in the scope of a given instance. */
501int
502OF_call_method(char *method, ihandle_t instance, int nargs, int nreturns, ...)
514static int
515ofw_std_call_method(ofw_t ofw, ihandle_t instance, const char *method,
516 int nargs, int nreturns, unsigned long *args_and_returns)
517{
504 va_list ap;
518 static struct {
519 cell_t name;
520 cell_t nargs;
521 cell_t nreturns;
522 cell_t method;
523 cell_t instance;
524 cell_t args_n_results[12];
525 } args = {
526 (cell_t)"call-method",
527 2,
528 1,
529 };
530 cell_t *cp;
531 unsigned long *ap;
532 int n;
533
534 if (nargs > 6)
535 return (-1);
536 args.nargs = nargs + 2;
537 args.nreturns = nreturns + 1;
538 args.method = (cell_t)method;
539 args.instance = instance;
526 va_start(ap, nreturns);
540
541 ap = args_and_returns;
542 for (cp = args.args_n_results + (n = nargs); --n >= 0;)
528 *--cp = va_arg(ap, cell_t);
543 *--cp = *(ap++);
544 if (openfirmware(&args) == -1)
545 return (-1);
546 if (args.args_n_results[nargs])
547 return (args.args_n_results[nargs]);
548 for (cp = args.args_n_results + nargs + (n = args.nreturns); --n > 0;)
534 *va_arg(ap, cell_t *) = *--cp;
535 va_end(ap);
549 *(ap++) = *--cp;
550 return (0);
551}
552
553/*
554 * Device I/O functions
555 */
556
557/* Open an instance for a device. */
544ihandle_t
545OF_open(char *device)
558static ihandle_t
559ofw_std_open(ofw_t ofw, const char *device)
560{
561 static struct {
562 cell_t name;
563 cell_t nargs;
564 cell_t nreturns;
565 cell_t device;
566 cell_t instance;
567 } args = {

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573 args.device = (cell_t)device;
574 if (openfirmware(&args) == -1 || args.instance == 0) {
575 return (-1);
576 }
577 return (args.instance);
578}
579
580/* Close an instance. */
567void
568OF_close(ihandle_t instance)
581static void
582ofw_std_close(ofw_t ofw, ihandle_t instance)
583{
584 static struct {
585 cell_t name;
586 cell_t nargs;
587 cell_t nreturns;
588 cell_t instance;
589 } args = {
590 (cell_t)"close",
591 1,
592 };
593
594 args.instance = instance;
595 openfirmware(&args);
596}
597
598/* Read from an instance. */
585int
586OF_read(ihandle_t instance, void *addr, int len)
599static ssize_t
600ofw_std_read(ofw_t ofw, ihandle_t instance, void *addr, size_t len)
601{
602 static struct {
603 cell_t name;
604 cell_t nargs;
605 cell_t nreturns;
606 cell_t instance;
607 cell_t addr;
608 cell_t len;

--- 9 unchanged lines hidden (view full) ---

618 args.len = len;
619 if (openfirmware(&args) == -1)
620 return (-1);
621
622 return (args.actual);
623}
624
625/* Write to an instance. */
612int
613OF_write(ihandle_t instance, void *addr, int len)
626static ssize_t
627ofw_std_write(ofw_t ofw, ihandle_t instance, const void *addr, size_t len)
628{
629 static struct {
630 cell_t name;
631 cell_t nargs;
632 cell_t nreturns;
633 cell_t instance;
634 cell_t addr;
635 cell_t len;

--- 8 unchanged lines hidden (view full) ---

644 args.addr = (cell_t)addr;
645 args.len = len;
646 if (openfirmware(&args) == -1)
647 return (-1);
648 return (args.actual);
649}
650
651/* Seek to a position. */
638int
639OF_seek(ihandle_t instance, u_int64_t pos)
652static int
653ofw_std_seek(ofw_t ofw, ihandle_t instance, u_int64_t pos)
654{
655 static struct {
656 cell_t name;
657 cell_t nargs;
658 cell_t nreturns;
659 cell_t instance;
660 cell_t poshi;
661 cell_t poslo;

--- 12 unchanged lines hidden (view full) ---

674 return (args.status);
675}
676
677/*
678 * Memory functions
679 */
680
681/* Claim an area of memory. */
668void *
669OF_claim(void *virt, u_int size, u_int align)
682static caddr_t
683ofw_std_claim(ofw_t ofw, void *virt, size_t size, u_int align)
684{
685 static struct {
686 cell_t name;
687 cell_t nargs;
688 cell_t nreturns;
689 cell_t virt;
690 cell_t size;
691 cell_t align;

--- 8 unchanged lines hidden (view full) ---

700 args.size = size;
701 args.align = align;
702 if (openfirmware(&args) == -1)
703 return ((void *)-1);
704 return ((void *)args.baseaddr);
705}
706
707/* Release an area of memory. */
694void
695OF_release(void *virt, u_int size)
708static void
709ofw_std_release(ofw_t ofw, void *virt, size_t size)
710{
711 static struct {
712 cell_t name;
713 cell_t nargs;
714 cell_t nreturns;
715 cell_t virt;
716 cell_t size;
717 } args = {

--- 5 unchanged lines hidden (view full) ---

723 args.size = size;
724 openfirmware(&args);
725}
726
727/*
728 * Control transfer functions
729 */
730
717/* Reset the system and call "boot <bootspec>". */
718void
719OF_boot(char *bootspec)
720{
721 static struct {
722 cell_t name;
723 cell_t nargs;
724 cell_t nreturns;
725 cell_t bootspec;
726 } args = {
727 (cell_t)"boot",
728 1,
729 };
730
731 args.bootspec = (cell_t)bootspec;
732 openfirmware(&args);
733 for (;;) /* just in case */
734 ;
735}
736
731/* Suspend and drop back to the Open Firmware interface. */
738void
739OF_enter()
732static void
733ofw_std_enter(ofw_t ofw)
734{
735 static struct {
736 cell_t name;
737 cell_t nargs;
738 cell_t nreturns;
739 } args = {
740 (cell_t)"enter",
741 };
742
743 openfirmware(&args);
744 /* We may come back. */
745}
746
747/* Shut down and drop back to the Open Firmware interface. */
754void
755OF_exit()
748static void
749ofw_std_exit(ofw_t ofw)
750{
751 static struct {
752 cell_t name;
753 cell_t nargs;
754 cell_t nreturns;
755 } args = {
756 (cell_t)"exit",
757 };
758
759 openfirmware(&args);
760 for (;;) /* just in case */
761 ;
762}
763
770/* Free <size> bytes starting at <virt>, then call <entry> with <arg>. */
771#if 0
772void
773OF_chain(void *virt, u_int size, void (*entry)(), void *arg, u_int len)
774{
775 static struct {
776 cell_t name;
777 cell_t nargs;
778 cell_t nreturns;
779 cell_t virt;
780 cell_t size;
781 cell_t entry;
782 cell_t arg;
783 cell_t len;
784 } args = {
785 (cell_t)"chain",
786 5,
787 };
788
789 args.virt = (cell_t)virt;
790 args.size = size;
791 args.entry = (cell_t)entry;
792 args.arg = (cell_t)arg;
793 args.len = len;
794 openfirmware(&args);
795}
796#else
797void
798OF_chain(void *virt, u_int size,
799 void (*entry)(void *, u_int, void *, void *, u_int), void *arg, u_int len)
800{
801 /*
802 * This is a REALLY dirty hack till the firmware gets this going
803 */
804#if 0
805 if (size > 0)
806 OF_release(virt, size);
807#endif
808 entry(0, 0, openfirmware, arg, len);
809}
810#endif