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1.1 root 1: /*
2: * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * Portions Copyright (c) 1999 Apple Computer, Inc. All Rights
7: * Reserved. This file contains Original Code and/or Modifications of
8: * Original Code as defined in and that are subject to the Apple Public
9: * Source License Version 1.1 (the "License"). You may not use this file
10: * except in compliance with the License. Please obtain a copy of the
11: * License at http://www.apple.com/publicsource and read it before using
12: * this file.
13: *
14: * The Original Code and all software distributed under the License are
15: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
16: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
17: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
18: * FITNESS FOR A PARTICULAR PURPOSE OR NON- INFRINGEMENT. Please see the
19: * License for the specific language governing rights and limitations
20: * under the License.
21: *
22: * @APPLE_LICENSE_HEADER_END@
23: */
24: /* Copyright (c) 1991 NeXT Computer, Inc. All rights reserved.
25: *
26: * IOStubKernLoad.m - kernload module for IOStub.
27: *
28: * HISTORY
29: * 25-Apr-91 Doug Mitchell at NeXT
30: * Created.
31: */
32:
33: #undef MACH_USER_API
34: #define KERNEL_PRIVATE 1
35:
36: #define STUB_BLOCK_DEVICE 7
37: #define STUB_RAW_DEVICE 16
38:
39: #import <kernserv/kern_server_types.h>
40: #import <mach/message.h>
41: #import "IOStub.h"
42: #import "IOStubPrivate.h"
43: #import "IOStubUnix.h"
44: #import <bsd/sys/conf.h>
45: #import <bsd/dev/ldd.h>
46:
47: kern_server_t stub_var;
48:
49: struct cdevsw stub_saved_cdevsw;
50: struct bdevsw stub_saved_bdevsw;
51:
52: extern int nulldev();
53: extern int nodev();
54: extern int seltrue();
55: #define nullstr 0
56:
57: /*
58: * these get copied into bdevsw/cdevsw at load time.
59: */
60: struct bdevsw stub_bdevsw = { (PFI)stub_open,
61: (PFI)stub_close,
62: (PFI)stub_strategy,
63: nodev,
64: nodev,
65: 0 };
66: struct cdevsw stub_cdevsw = { (PFI)stub_open,
67: (PFI)stub_close,
68: (PFI)stub_read,
69: (PFI)stub_write,
70: (PFI)stub_ioctl,
71: nodev,
72: nulldev,
73: seltrue,
74: nodev,
75: nodev,
76: nodev };
77:
78: void stub_announce(int unit);
79: void stub_port_gone(port_name_t port);
80: void stub_terminate(int unit);
81: void stub_server(msg_header_t *in_p, int unit);
82:
83: /*
84: * we're just placed into memory here. Actual device initialization
85: * and instantiation is done in stub_server().
86: */
87: void stub_announce(int unit)
88: {
89: IOLog("stub%d: IOStub device Loaded\n", unit);
90: } /* stub_announce() */
91:
92: void stub_port_gone(port_name_t port)
93: {
94: /* no-op, we don't really care about any ports. */
95:
96: } /* stub_port_gone() */
97:
98: void stub_terminate(int unit)
99: {
100: int i;
101:
102: xpr_stub("stub_terminate\n", 1,2,3,4,5);
103:
104: /*
105: * remove ourself from devsw's.
106: */
107: bdevsw[STUB_BLOCK_DEVICE] = stub_saved_bdevsw;
108: cdevsw[STUB_RAW_DEVICE] = stub_saved_cdevsw;
109: for(i=0; i<NUM_IOSTUBS; i++) {
110: if(stub_object[i].stub_id != nil) {
111: [stub_object[i].stub_id free];
112: stub_object[i].stub_id = nil;
113: IOFree(stub_object[i].physbuf, sizeof(struct buf));
114: }
115: }
116:
117: IOLog("stub%d: Stub Device Unloaded\n", unit);
118: } /* stub_terminate() */
119:
120: /*
121: * Initialize and instantiate. This is invoked upon receipt of any message.
122: *
123: * FIXME: this could share common code with stub_probe() when we're no longer
124: * a loadable module.
125: */
126: static int stub_is_initialized = 0;
127:
128: void stub_server(msg_header_t *in_p, int unit)
129: {
130: int Unit;
131:
132: if(stub_is_initialized) {
133: IOLog("stub_server already initialized\n");
134: goto done;
135: }
136:
137: #if m68k
138: /*
139: * First initialize the libraries we'll use.
140: */
141: IOlibIOInit();
142: #endif m68k
143: #ifdef XPR_DEBUG
144: #if m68k
145: xprInit(500);
146: #endif m68k
147: xprSetBitmask(XPR_IODEVICE_INDEX, XPR_DEVICE | XPR_STUB);
148: #endif XPR_DEBUG
149: xpr_stub("stub_server\n", 1,2,3,4,5);
150:
151: for(Unit=0; Unit<NUM_IOSTUBS; Unit++) {
152: stub_object[Unit].stub_id = [IOStub stubProbe:Unit];
153: if(stub_object[Unit].stub_id != nil) {
154: stub_object[Unit].physbuf =
155: IOMalloc(sizeof(struct buf));
156: stub_object[Unit].physbuf->b_flags = 0;
157: }
158: }
159:
160: /*
161: * place ourself in cdevsw and bdevsw.
162: */
163: stub_saved_bdevsw = bdevsw[STUB_BLOCK_DEVICE];
164: stub_saved_cdevsw = cdevsw[STUB_RAW_DEVICE];
165: bdevsw[STUB_BLOCK_DEVICE] = stub_bdevsw;
166: cdevsw[STUB_RAW_DEVICE] = stub_cdevsw;
167:
168: IOLog("IOStub device Installed\n");
169:
170: /*
171: * return message to loader.
172: */
173: done:
174: msg_send(in_p,
175: MSG_OPTION_NONE,
176: 0);
177: } /* stub_server() */
178:
179:
180: /* end of stub_ks.m */
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