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
|
/******************************************************************************
*
* Module Name: amregion - ACPI default Op_region (address space) handlers
* $Revision: 35 $
*
*****************************************************************************/
/*
* Copyright (C) 2000 R. Byron Moore
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "acpi.h"
#include "acinterp.h"
#include "amlcode.h"
#include "acnamesp.h"
#include "achware.h"
#include "acevents.h"
#define _COMPONENT INTERPRETER
MODULE_NAME ("amregion")
/*******************************************************************************
*
* FUNCTION: Acpi_aml_system_memory_space_handler
*
* PARAMETERS: Function - Read or Write operation
* Address - Where in the space to read or write
* Bit_width - Field width in bits (8, 16, or 32)
* Value - Pointer to in or out value
* Handler_context - Pointer to Handler's context
* Region_context - Pointer to context specific to the
* accessed region
*
* RETURN: Status
*
* DESCRIPTION: Handler for the System Memory address space (Op Region)
*
******************************************************************************/
ACPI_STATUS
acpi_aml_system_memory_space_handler (
u32 function,
u32 address, /* TBD: [Future] Should this be A POINTER for 64-bit support? */
u32 bit_width,
u32 *value,
void *handler_context,
void *region_context)
{
ACPI_STATUS status = AE_OK;
void *logical_addr_ptr = NULL;
MEM_HANDLER_CONTEXT *mem_info = region_context;
u32 length;
/* Validate and translate the bit width */
switch (bit_width)
{
case 8:
length = 1;
break;
case 16:
length = 2;
break;
case 32:
length = 4;
break;
default:
return (AE_AML_OPERAND_VALUE);
break;
}
/*
* Does the request fit into the cached memory mapping?
* Is 1) Address below the current mapping? OR
* 2) Address beyond the current mapping?
*/
if (((u8 *) address < mem_info->mapped_physical_address) ||
(((u8 *) address + length) >
(mem_info->mapped_physical_address + mem_info->mapped_length)))
{
/*
* The request cannot be resolved by the current memory mapping;
* Delete the existing mapping and create a new one.
*/
if (mem_info->mapped_length) {
/* Valid mapping, delete it */
acpi_os_unmap_memory (mem_info->mapped_logical_address,
mem_info->mapped_length);
}
mem_info->mapped_length = 0; /* In case of failure below */
/* Create a new mapping starting at the address given */
status = acpi_os_map_memory ((void *) address, SYSMEM_REGION_WINDOW_SIZE,
(void **) &mem_info->mapped_logical_address);
if (ACPI_FAILURE (status)) {
return (status);
}
mem_info->mapped_physical_address = (u8 *) address;
mem_info->mapped_length = SYSMEM_REGION_WINDOW_SIZE;
}
/*
* Generate a logical pointer corresponding to the address we want to
* access
*/
logical_addr_ptr = mem_info->mapped_logical_address +
((u8 *) address - mem_info->mapped_physical_address);
/* Perform the memory read or write */
switch (function)
{
case ADDRESS_SPACE_READ:
switch (bit_width)
{
case 8:
*value = (u32)* (u8 *) logical_addr_ptr;
break;
case 16:
MOVE_UNALIGNED16_TO_32 (value, logical_addr_ptr);
break;
case 32:
MOVE_UNALIGNED32_TO_32 (value, logical_addr_ptr);
break;
}
break;
case ADDRESS_SPACE_WRITE:
switch (bit_width)
{
case 8:
*(u8 *) logical_addr_ptr = (u8) *value;
break;
case 16:
MOVE_UNALIGNED16_TO_16 (logical_addr_ptr, value);
break;
case 32:
MOVE_UNALIGNED32_TO_32 (logical_addr_ptr, value);
break;
}
break;
default:
status = AE_BAD_PARAMETER;
break;
}
return (status);
}
/*******************************************************************************
*
* FUNCTION: Acpi_aml_system_io_space_handler
*
* PARAMETERS: Function - Read or Write operation
* Address - Where in the space to read or write
* Bit_width - Field width in bits (8, 16, or 32)
* Value - Pointer to in or out value
* Handler_context - Pointer to Handler's context
* Region_context - Pointer to context specific to the
* accessed region
*
* RETURN: Status
*
* DESCRIPTION: Handler for the System IO address space (Op Region)
*
******************************************************************************/
ACPI_STATUS
acpi_aml_system_io_space_handler (
u32 function,
u32 address,
u32 bit_width,
u32 *value,
void *handler_context,
void *region_context)
{
ACPI_STATUS status = AE_OK;
/* Decode the function parameter */
switch (function)
{
case ADDRESS_SPACE_READ:
switch (bit_width)
{
/* I/O Port width */
case 8:
*value = (u32) acpi_os_in8 ((ACPI_IO_ADDRESS) address);
break;
case 16:
*value = (u32) acpi_os_in16 ((ACPI_IO_ADDRESS) address);
break;
case 32:
*value = acpi_os_in32 ((ACPI_IO_ADDRESS) address);
break;
default:
status = AE_AML_OPERAND_VALUE;
}
break;
case ADDRESS_SPACE_WRITE:
switch (bit_width)
{
/* I/O Port width */
case 8:
acpi_os_out8 ((ACPI_IO_ADDRESS) address, (u8) *value);
break;
case 16:
acpi_os_out16 ((ACPI_IO_ADDRESS) address, (u16) *value);
break;
case 32:
acpi_os_out32 ((ACPI_IO_ADDRESS) address, *value);
break;
default:
status = AE_AML_OPERAND_VALUE;
}
break;
default:
status = AE_BAD_PARAMETER;
break;
}
return (status);
}
/*******************************************************************************
*
* FUNCTION: Acpi_aml_pci_config_space_handler
*
* PARAMETERS: Function - Read or Write operation
* Address - Where in the space to read or write
* Bit_width - Field width in bits (8, 16, or 32)
* Value - Pointer to in or out value
* Handler_context - Pointer to Handler's context
* Region_context - Pointer to context specific to the
* accessed region
*
* RETURN: Status
*
* DESCRIPTION: Handler for the PCI Config address space (Op Region)
*
******************************************************************************/
ACPI_STATUS
acpi_aml_pci_config_space_handler (
u32 function,
u32 address,
u32 bit_width,
u32 *value,
void *handler_context,
void *region_context)
{
ACPI_STATUS status = AE_OK;
u32 pci_bus;
u32 dev_func;
u8 pci_reg;
PCI_HANDLER_CONTEXT *PCIcontext;
/*
* The arguments to Acpi_os(Read|Write)Pci_cfg(Byte|Word|Dword) are:
*
* Seg_bus - 0xSSSSBBBB - SSSS is the PCI bus segment
* BBBB is the PCI bus number
*
* Dev_func - 0xDDDDFFFF - DDDD is the PCI device number
* FFFF is the PCI device function number
*
* Reg_num - Config space register must be < 40h
*
* Value - input value for write, output for read
*
*/
PCIcontext = (PCI_HANDLER_CONTEXT *) region_context;
pci_bus = LOWORD(PCIcontext->seg) << 16;
pci_bus |= LOWORD(PCIcontext->bus);
dev_func = PCIcontext->dev_func;
pci_reg = (u8) address;
switch (function)
{
case ADDRESS_SPACE_READ:
*value = 0;
switch (bit_width)
{
/* PCI Register width */
case 8:
status = acpi_os_read_pci_cfg_byte (pci_bus, dev_func, pci_reg,
(u8 *) value);
break;
case 16:
status = acpi_os_read_pci_cfg_word (pci_bus, dev_func, pci_reg,
(u16 *) value);
break;
case 32:
status = acpi_os_read_pci_cfg_dword (pci_bus, dev_func, pci_reg,
value);
break;
default:
status = AE_AML_OPERAND_VALUE;
} /* Switch bit_width */
break;
case ADDRESS_SPACE_WRITE:
switch (bit_width)
{
/* PCI Register width */
case 8:
status = acpi_os_write_pci_cfg_byte (pci_bus, dev_func, pci_reg,
*(u8 *) value);
break;
case 16:
status = acpi_os_write_pci_cfg_word (pci_bus, dev_func, pci_reg,
*(u16 *) value);
break;
case 32:
status = acpi_os_write_pci_cfg_dword (pci_bus, dev_func, pci_reg,
*value);
break;
default:
status = AE_AML_OPERAND_VALUE;
} /* Switch bit_width */
break;
default:
status = AE_BAD_PARAMETER;
break;
}
return (status);
}
|
