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
|
/* $OpenBSD: isa_io.c,v 1.2 2005/12/17 07:31:25 miod Exp $ */
/* $NetBSD: isa_io.c,v 1.2 2002/09/27 15:35:44 provos Exp $ */
/*
* Copyright 1997
* Digital Equipment Corporation. All rights reserved.
*
* This software is furnished under license and may be used and
* copied only in accordance with the following terms and conditions.
* Subject to these conditions, you may download, copy, install,
* use, modify and distribute this software in source and/or binary
* form. No title or ownership is transferred hereby.
*
* 1) Any source code used, modified or distributed must reproduce
* and retain this copyright notice and list of conditions as
* they appear in the source file.
*
* 2) No right is granted to use any trade name, trademark, or logo of
* Digital Equipment Corporation. Neither the "Digital Equipment
* Corporation" name nor any trademark or logo of Digital Equipment
* Corporation may be used to endorse or promote products derived
* from this software without the prior written permission of
* Digital Equipment Corporation.
*
* 3) This software is provided "AS-IS" and any express or implied
* warranties, including but not limited to, any implied warranties
* of merchantability, fitness for a particular purpose, or
* non-infringement are disclaimed. In no event shall DIGITAL be
* liable for any damages whatsoever, and in particular, DIGITAL
* shall not be liable for special, indirect, consequential, or
* incidental damages or damages for lost profits, loss of
* revenue or loss of use, whether such damages arise in contract,
* negligence, tort, under statute, in equity, at law or otherwise,
* even if advised of the possibility of such damage.
*/
/*
* bus_space I/O functions for isa
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <machine/bus.h>
#include <machine/pio.h>
#include <machine/isa_machdep.h>
/* Proto types for all the bus_space structure functions */
bs_protos(isa);
bs_protos(bs_notimpl);
/*
* Declare the isa bus space tags
* The IO and MEM structs are identical, except for the cookies,
* which contain the address space bases.
*/
/*
* NOTE: ASSEMBLY LANGUAGE RELIES ON THE COOKIE -- THE FIRST MEMBER OF
* THIS STRUCTURE -- TO BE THE VIRTUAL ADDRESS OF ISA/IO!
*/
struct bus_space isa_io_bs_tag = {
/* cookie */
NULL, /* initialized below */
/* mapping/unmapping */
isa_bs_map,
isa_bs_unmap,
isa_bs_subregion,
/* allocation/deallocation */
isa_bs_alloc,
isa_bs_free,
/* get kernel virtual address */
isa_bs_vaddr,
/* mmap bus space for userland */
bs_notimpl_bs_mmap, /* XXX possible even? XXX */
/* barrier */
isa_bs_barrier,
/* read (single) */
isa_bs_r_1,
isa_bs_r_2,
isa_bs_r_4,
bs_notimpl_bs_r_8,
/* read multiple */
isa_bs_rm_1,
isa_bs_rm_2,
isa_bs_rm_4,
bs_notimpl_bs_rm_8,
/* read region */
isa_bs_rr_1,
isa_bs_rr_2,
isa_bs_rr_4,
bs_notimpl_bs_rr_8,
/* write (single) */
isa_bs_w_1,
isa_bs_w_2,
isa_bs_w_4,
bs_notimpl_bs_w_8,
/* write multiple */
isa_bs_wm_1,
isa_bs_wm_2,
isa_bs_wm_4,
bs_notimpl_bs_wm_8,
/* write region */
isa_bs_wr_1,
isa_bs_wr_2,
isa_bs_wr_4,
bs_notimpl_bs_wr_8,
/* set multiple */
bs_notimpl_bs_sm_1,
bs_notimpl_bs_sm_2,
bs_notimpl_bs_sm_4,
bs_notimpl_bs_sm_8,
/* set region */
bs_notimpl_bs_sr_1,
isa_bs_sr_2,
bs_notimpl_bs_sr_4,
bs_notimpl_bs_sr_8,
/* copy */
bs_notimpl_bs_c_1,
bs_notimpl_bs_c_2,
bs_notimpl_bs_c_4,
bs_notimpl_bs_c_8,
};
/*
* NOTE: ASSEMBLY LANGUAGE RELIES ON THE COOKIE -- THE FIRST MEMBER OF
* THIS STRUCTURE -- TO BE THE VIRTUAL ADDRESS OF ISA/MEMORY!
*/
struct bus_space isa_mem_bs_tag = {
/* cookie */
NULL, /* initialized below */
/* mapping/unmapping */
isa_bs_map,
isa_bs_unmap,
isa_bs_subregion,
/* allocation/deallocation */
isa_bs_alloc,
isa_bs_free,
/* get kernel virtual address */
isa_bs_vaddr,
/* mmap bus space for userland */
bs_notimpl_bs_mmap, /* XXX open for now ... XXX */
/* barrier */
isa_bs_barrier,
/* read (single) */
isa_bs_r_1,
isa_bs_r_2,
isa_bs_r_4,
bs_notimpl_bs_r_8,
/* read multiple */
isa_bs_rm_1,
isa_bs_rm_2,
isa_bs_rm_4,
bs_notimpl_bs_rm_8,
/* read region */
isa_bs_rr_1,
isa_bs_rr_2,
isa_bs_rr_4,
bs_notimpl_bs_rr_8,
/* write (single) */
isa_bs_w_1,
isa_bs_w_2,
isa_bs_w_4,
bs_notimpl_bs_w_8,
/* write multiple */
isa_bs_wm_1,
isa_bs_wm_2,
isa_bs_wm_4,
bs_notimpl_bs_wm_8,
/* write region */
isa_bs_wr_1,
isa_bs_wr_2,
isa_bs_wr_4,
bs_notimpl_bs_wr_8,
/* set multiple */
bs_notimpl_bs_sm_1,
bs_notimpl_bs_sm_2,
bs_notimpl_bs_sm_4,
bs_notimpl_bs_sm_8,
/* set region */
bs_notimpl_bs_sr_1,
isa_bs_sr_2,
bs_notimpl_bs_sr_4,
bs_notimpl_bs_sr_8,
/* copy */
bs_notimpl_bs_c_1,
bs_notimpl_bs_c_2,
bs_notimpl_bs_c_4,
bs_notimpl_bs_c_8,
};
/* bus space functions */
void
isa_io_init(isa_io_addr, isa_mem_addr)
vaddr_t isa_io_addr;
vaddr_t isa_mem_addr;
{
isa_io_bs_tag.bs_cookie = (void *)isa_io_addr;
isa_mem_bs_tag.bs_cookie = (void *)isa_mem_addr;
}
/*
* break the abstraction: sometimes, other parts of the system
* (e.g. X servers) need to map ISA space directly. use these
* functions sparingly!
*/
vaddr_t
isa_io_data_vaddr(void)
{
return (vaddr_t)isa_io_bs_tag.bs_cookie;
}
vaddr_t
isa_mem_data_vaddr(void)
{
return (vaddr_t)isa_mem_bs_tag.bs_cookie;
}
int
isa_bs_map(t, bpa, size, cacheable, bshp)
void *t;
bus_addr_t bpa;
bus_size_t size;
int cacheable;
bus_space_handle_t *bshp;
{
*bshp = bpa + (bus_addr_t)t;
return(0);
}
void
isa_bs_unmap(t, bsh, size)
void *t;
bus_space_handle_t bsh;
bus_size_t size;
{
/* Nothing to do. */
}
int
isa_bs_subregion(t, bsh, offset, size, nbshp)
void *t;
bus_space_handle_t bsh;
bus_size_t offset, size;
bus_space_handle_t *nbshp;
{
/* printf("isa_subregion(tag=%p, bsh=%lx, off=%lx, sz=%lx)\n",
t, bsh, offset, size);*/
*nbshp = bsh + offset;
return(0);
}
int
isa_bs_alloc(t, rstart, rend, size, alignment, boundary, cacheable,
bpap, bshp)
void *t;
bus_addr_t rstart, rend;
bus_size_t size, alignment, boundary;
int cacheable;
bus_addr_t *bpap;
bus_space_handle_t *bshp;
{
panic("isa_alloc(): Help!");
}
void
isa_bs_free(t, bsh, size)
void *t;
bus_space_handle_t bsh;
bus_size_t size;
{
panic("isa_free(): Help!");
}
void *
isa_bs_vaddr(t, bsh)
void *t;
bus_space_handle_t bsh;
{
return ((void *)bsh);
}
void
isa_bs_barrier(t, bsh, offset, len, flags)
void *t;
bus_space_handle_t bsh;
bus_size_t offset, len;
int flags;
{
/* just return */
}
|
