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1.1 nbrk 1: /* $OpenBSD: opendev.c,v 1.9 2006/03/09 23:06:19 miod Exp $ */
2: /* $NetBSD: openfirm.c,v 1.1 1996/09/30 16:34:52 ws Exp $ */
3:
4: /*
5: * Copyright (C) 1995, 1996 Wolfgang Solfrank.
6: * Copyright (C) 1995, 1996 TooLs GmbH.
7: * All rights reserved.
8: *
9: * Redistribution and use in source and binary forms, with or without
10: * modification, are permitted provided that the following conditions
11: * are met:
12: * 1. Redistributions of source code must retain the above copyright
13: * notice, this list of conditions and the following disclaimer.
14: * 2. Redistributions in binary form must reproduce the above copyright
15: * notice, this list of conditions and the following disclaimer in the
16: * documentation and/or other materials provided with the distribution.
17: * 3. All advertising materials mentioning features or use of this software
18: * must display the following acknowledgement:
19: * This product includes software developed by TooLs GmbH.
20: * 4. The name of TooLs GmbH may not be used to endorse or promote products
21: * derived from this software without specific prior written permission.
22: *
23: * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
24: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
25: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
26: * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
27: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
28: * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
29: * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
30: * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
31: * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
32: * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33: */
34: #include <sys/param.h>
35: #include <sys/systm.h>
36: #include <sys/stdarg.h>
37: #include <machine/psl.h>
38:
39: #include <dev/ofw/openfirm.h>
40:
41: extern void ofw_stack(void);
42: extern void ofbcopy(const void *, void *, size_t);
43:
44: int
45: OF_instance_to_package(int ihandle)
46: {
47: static struct {
48: char *name;
49: int nargs;
50: int nreturns;
51: int ihandle;
52: int phandle;
53: } args = {
54: "instance-to-package",
55: 1,
56: 1,
57: };
58:
59: ofw_stack();
60: args.ihandle = ihandle;
61: if (openfirmware(&args) == -1)
62: return -1;
63: return args.phandle;
64: }
65:
66: int
67: OF_package_to_path(int phandle, char *buf, int buflen)
68: {
69: static struct {
70: char *name;
71: int nargs;
72: int nreturns;
73: int phandle;
74: char *buf;
75: int buflen;
76: int length;
77: } args = {
78: "package-to-path",
79: 3,
80: 1,
81: };
82:
83: ofw_stack();
84: if (buflen > PAGE_SIZE)
85: return -1;
86: args.phandle = phandle;
87: args.buf = OF_buf;
88: args.buflen = buflen;
89: if (openfirmware(&args) < 0)
90: return -1;
91: if (args.length > 0)
92: ofbcopy(OF_buf, buf, args.length);
93: return args.length;
94: }
95:
96:
97: int
98: OF_call_method(char *method, int ihandle, int nargs, int nreturns, ...)
99: {
100: va_list ap;
101: static struct {
102: char *name;
103: int nargs;
104: int nreturns;
105: char *method;
106: int ihandle;
107: int args_n_results[12];
108: } args = {
109: "call-method",
110: 2,
111: 1,
112: };
113: int *ip, n;
114:
115: if (nargs > 6)
116: return -1;
117: args.nargs = nargs + 2;
118: args.nreturns = nreturns + 1;
119: args.method = method;
120: args.ihandle = ihandle;
121: va_start(ap, nreturns);
122: for (ip = args.args_n_results + (n = nargs); --n >= 0;)
123: *--ip = va_arg(ap, int);
124: ofw_stack();
125: if (openfirmware(&args) == -1) {
126: va_end(ap);
127: return -1;
128: }
129: if (args.args_n_results[nargs]) {
130: va_end(ap);
131: return args.args_n_results[nargs];
132: }
133: for (ip = args.args_n_results + nargs + (n = args.nreturns); --n > 0;)
134: *va_arg(ap, int *) = *--ip;
135: va_end(ap);
136: return 0;
137: }
138: int
139: OF_call_method_1(char *method, int ihandle, int nargs, ...)
140: {
141: va_list ap;
142: static struct {
143: char *name;
144: int nargs;
145: int nreturns;
146: char *method;
147: int ihandle;
148: int args_n_results[8];
149: } args = {
150: "call-method",
151: 2,
152: 2,
153: };
154: int *ip, n;
155:
156: if (nargs > 6)
157: return -1;
158: args.nargs = nargs + 2;
159: args.method = method;
160: args.ihandle = ihandle;
161: va_start(ap, nargs);
162: for (ip = args.args_n_results + (n = nargs); --n >= 0;)
163: *--ip = va_arg(ap, int);
164: va_end(ap);
165: ofw_stack();
166: if (openfirmware(&args) == -1)
167: return -1;
168: if (args.args_n_results[nargs])
169: return -1;
170: return args.args_n_results[nargs + 1];
171: }
172:
173: int
174: OF_open(char *dname)
175: {
176: static struct {
177: char *name;
178: int nargs;
179: int nreturns;
180: char *dname;
181: int handle;
182: } args = {
183: "open",
184: 1,
185: 1,
186: };
187: int l;
188:
189: ofw_stack();
190: if ((l = strlen(dname)) >= PAGE_SIZE)
191: return -1;
192: ofbcopy(dname, OF_buf, l + 1);
193: args.dname = OF_buf;
194: if (openfirmware(&args) == -1)
195: return -1;
196: return args.handle;
197: }
198:
199: void
200: OF_close(int handle)
201: {
202: static struct {
203: char *name;
204: int nargs;
205: int nreturns;
206: int handle;
207: } args = {
208: "close",
209: 1,
210: 0,
211: };
212:
213: ofw_stack();
214: args.handle = handle;
215: openfirmware(&args);
216: }
217:
218: /*
219: * This assumes that character devices don't read in multiples of PAGE_SIZE.
220: */
221: int
222: OF_read(int handle, void *addr, int len)
223: {
224: static struct {
225: char *name;
226: int nargs;
227: int nreturns;
228: int ihandle;
229: void *addr;
230: int len;
231: int actual;
232: } args = {
233: "read",
234: 3,
235: 1,
236: };
237: int l, act = 0;
238:
239: ofw_stack();
240: args.ihandle = handle;
241: args.addr = OF_buf;
242: for (; len > 0; len -= l, addr += l) {
243: l = min(PAGE_SIZE, len);
244: args.len = l;
245: if (openfirmware(&args) == -1)
246: return -1;
247: if (args.actual > 0) {
248: ofbcopy(OF_buf, addr, args.actual);
249: act += args.actual;
250: }
251: if (args.actual < l) {
252: if (act)
253: return act;
254: else
255: return args.actual;
256: }
257: }
258: return act;
259: }
260:
261: int
262: OF_write(int handle, void *addr, int len)
263: {
264: static struct {
265: char *name;
266: int nargs;
267: int nreturns;
268: int ihandle;
269: void *addr;
270: int len;
271: int actual;
272: } args = {
273: "write",
274: 3,
275: 1,
276: };
277: int l, act = 0;
278:
279: ofw_stack();
280: args.ihandle = handle;
281: args.addr = OF_buf;
282: for (; len > 0; len -= l, addr += l) {
283: l = min(PAGE_SIZE, len);
284: ofbcopy(addr, OF_buf, l);
285: args.len = l;
286: if (openfirmware(&args) == -1)
287: return -1;
288: l = args.actual;
289: act += l;
290: }
291: return act;
292: }
293:
294: int
295: OF_seek(int handle, u_quad_t pos)
296: {
297: static struct {
298: char *name;
299: int nargs;
300: int nreturns;
301: int handle;
302: int poshi;
303: int poslo;
304: int status;
305: } args = {
306: "seek",
307: 3,
308: 1,
309: };
310:
311: ofw_stack();
312: args.handle = handle;
313: args.poshi = (int)(pos >> 32);
314: args.poslo = (int)pos;
315: if (openfirmware(&args) == -1)
316: return -1;
317: return args.status;
318: }