ReactOS 0.4.16-dev-297-gc569aee
isabus.c File Reference
#include "precomp.h"
Include dependency graph for isabus.c:

Go to the source code of this file.

Functions

static UCHAR IsaBusNextLFSR (_In_ UCHAR Lfsr, _In_ UCHAR InputBit)
 
static VOID IsaBusWriteAddressRegister (_In_ UCHAR Value)
 
static VOID IsaBusWriteDataRegister (_In_ UCHAR Value)
 
static UCHAR IsaBusReadSerialIsolationRegister (_In_ PUCHAR Port)
 
static UCHAR IsaBusReadDataPortRegister (_In_ PUCHAR Port)
 
static UCHAR IsaBusPnpChecksum (_In_ PISAPNP_IDENTIFIER Identifier)
 
static UCHAR IsaBusResourceDataChecksum (_In_ PUCHAR PnpRom, _In_ ULONG RomSize)
 
static VOID IsaBusPlugInCard (_Inout_ PISAPNP_CARD Card)
 
VOID IsaBusCreateCard (_Inout_ PISAPNP_CARD Card, _In_ PVOID PnpRom, _In_ ULONG RomSize, _In_ ULONG LogicalDevices)
 
VOID NTAPI WRITE_PORT_UCHAR (_In_ PUCHAR Port, _In_ UCHAR Value)
 
UCHAR NTAPI READ_PORT_UCHAR (_In_ PUCHAR Port)
 

Variables

PISAPNP_CARD IsapCard
 
static PISAPNP_CARD IsapConfigureCard = NULL
 
static ULONG IsapCardCount = 0
 
static UCHAR IsapAddressLatch = 0
 

Function Documentation

◆ IsaBusCreateCard()

VOID IsaBusCreateCard ( _Inout_ PISAPNP_CARD  Card,
_In_ PVOID  PnpRom,
_In_ ULONG  RomSize,
_In_ ULONG  LogicalDevices 
)

Definition at line 439 of file isabus.c.

444{
445 Card->RomSize = RomSize;
446 Card->PnpRom = PnpRom;
447 Card->PnpRom[FIELD_OFFSET(ISAPNP_IDENTIFIER, Checksum)] = IsaBusPnpChecksum(PnpRom);
448 Card->PnpRom[RomSize - 1] = IsaBusResourceDataChecksum(PnpRom, RomSize);
449 Card->LogicalDevices = LogicalDevices;
450
452
454}
Definition: card.h:28
static VOID IsaBusPlugInCard(_Inout_ PISAPNP_CARD Card)
Definition: isabus.c:426
static UCHAR IsaBusPnpChecksum(_In_ PISAPNP_IDENTIFIER Identifier)
Definition: isabus.c:391
static UCHAR IsaBusResourceDataChecksum(_In_ PUCHAR PnpRom, _In_ ULONG RomSize)
Definition: isabus.c:413
static ULONG IsapCardCount
Definition: isabus.c:17
#define FIELD_OFFSET(t, f)
Definition: typedefs.h:255

Referenced by DrvCreateCard1(), and DrvCreateCard2().

◆ IsaBusNextLFSR()

static UCHAR IsaBusNextLFSR ( _In_ UCHAR  Lfsr,
_In_ UCHAR  InputBit 
)
inlinestatic

Definition at line 25 of file isabus.c.

28{
29 UCHAR NextLfsr = Lfsr >> 1;
30
31 NextLfsr |= (((Lfsr ^ NextLfsr) ^ InputBit)) << 7;
32
33 return NextLfsr;
34}
unsigned char UCHAR
Definition: xmlstorage.h:181

Referenced by IsaBusPnpChecksum(), and IsaBusWriteAddressRegister().

◆ IsaBusPlugInCard()

static VOID IsaBusPlugInCard ( _Inout_ PISAPNP_CARD  Card)
static

Definition at line 426 of file isabus.c.

428{
429 Card->State = IsaWaitForKey;
430 Card->Lfsr = ISAPNP_LFSR_SEED;
431 Card->LfsrCount = 0;
432 Card->SelectNumberReg = 0;
433 Card->ReadDataPort = NULL;
434}
#define NULL
Definition: types.h:112
#define ISAPNP_LFSR_SEED
Definition: isapnphw.h:56
@ IsaWaitForKey
Definition: precomp.h:102

Referenced by IsaBusCreateCard().

◆ IsaBusPnpChecksum()

static UCHAR IsaBusPnpChecksum ( _In_ PISAPNP_IDENTIFIER  Identifier)
static

Definition at line 391 of file isabus.c.

393{
394 UCHAR i, j, Lfsr;
395
396 Lfsr = ISAPNP_LFSR_SEED;
397 for (i = 0; i < FIELD_OFFSET(ISAPNP_IDENTIFIER, Checksum); ++i)
398 {
400
401 for (j = 0; j < RTL_BITS_OF(Byte); ++j)
402 {
403 Lfsr = IsaBusNextLFSR(Lfsr, Byte);
404 Byte >>= 1;
405 }
406 }
407
408 return Lfsr;
409}
@ Identifier
Definition: asmpp.cpp:95
unsigned char Byte
Definition: zlib.h:37
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint i
Definition: glfuncs.h:248
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint GLint GLint j
Definition: glfuncs.h:250
static UCHAR IsaBusNextLFSR(_In_ UCHAR Lfsr, _In_ UCHAR InputBit)
Definition: isabus.c:25
#define RTL_BITS_OF(sizeOfArg)
Definition: ntbasedef.h:676
unsigned char * PUCHAR
Definition: typedefs.h:53

Referenced by IsaBusCreateCard().

◆ IsaBusReadDataPortRegister()

static UCHAR IsaBusReadDataPortRegister ( _In_ PUCHAR  Port)
static

Definition at line 328 of file isabus.c.

330{
333
335 return 0xFF;
336
337 switch (IsapAddressLatch)
338 {
340 {
342 break;
343
344 /* The resource data register may return an invalid identifier checksum byte */
346 {
348 break;
349 }
350
352 }
353
354 case ISAPNP_STATUS:
355 return 0x01; /* Resource data byte available */
356
359
362
363 case ISAPNP_ACTIVATE:
365 goto ReadDeviceRegister;
366
367 default:
368 {
369 if (IsapAddressLatch >= 0x40)
370 {
372
373ReadDeviceRegister:
375
376 return LogDev->Registers[IsapAddressLatch];
377 }
378 else
379 {
380 ok(FALSE, "Unexpected read from register %02x\n", IsapAddressLatch);
381 }
382 break;
383 }
384 }
385
386 return 0xFF;
387}
#define ok(value,...)
Definition: atltest.h:57
#define FALSE
Definition: types.h:117
CPPORT Port[4]
Definition: headless.c:35
#define ISAPNP_IORANGECHECK
Definition: isapnphw.h:32
#define ISAPNP_LOGICALDEVICENUMBER
Definition: isapnphw.h:29
#define ISAPNP_SERIALISOLATION
Definition: isapnphw.h:23
#define ISAPNP_ACTIVATE
Definition: isapnphw.h:31
#define ISAPNP_RESOURCEDATA
Definition: isapnphw.h:26
#define ISAPNP_STATUS
Definition: isapnphw.h:27
#define ISAPNP_CARDSELECTNUMBER
Definition: isapnphw.h:28
static PISAPNP_CARD IsapConfigureCard
Definition: isabus.c:16
static UCHAR IsaBusReadSerialIsolationRegister(_In_ PUCHAR Port)
Definition: isabus.c:266
static UCHAR IsapAddressLatch
Definition: isabus.c:18
ISAPNP_CARD_LOGICAL_DEVICE LogDev[TEST_MAX_SUPPORTED_DEVICES]
Definition: precomp.h:130
PUCHAR ReadDataPort
Definition: precomp.h:126
UCHAR DeviceNumberReg
Definition: precomp.h:121
ULONG RomSize
Definition: precomp.h:128
ULONG RomIdx
Definition: precomp.h:127
PUCHAR PnpRom
Definition: precomp.h:125
UCHAR SelectNumberReg
Definition: precomp.h:120

Referenced by READ_PORT_UCHAR().

◆ IsaBusReadSerialIsolationRegister()

static UCHAR IsaBusReadSerialIsolationRegister ( _In_ PUCHAR  Port)
static

Definition at line 266 of file isabus.c.

268{
269 ULONG i, ResponseMap = 0, ListenMap = 0;
270 UCHAR Result = 0xFF;
271
272 for (i = 0; i < IsapCardCount; ++i)
273 {
275
276 if (Card->State != IsaIsolation || Card->ReadDataPort != Port)
277 continue;
278
279 /* The hardware on each card expects 72 pairs of reads */
280 if (Card->SerialIsolationIdx == RTL_BITS_OF(ISAPNP_IDENTIFIER))
281 continue;
282
283 Card->IsolationRead ^= 1;
284
285 if (Card->IsolationRead)
286 {
287 if (Card->PnpRom[Card->SerialIsolationIdx / 8] & (1 << (Card->SerialIsolationIdx % 8)))
288 Card->SerialIdResponse = 0x55;
289 else
290 Card->SerialIdResponse = 0x00;
291
292 ++Card->RomIdx;
293 ++Card->SerialIsolationIdx;
294 }
295 else
296 {
297 Card->SerialIdResponse <<= 1;
298
299 if (Card->SerialIdResponse == 0xAA)
300 ResponseMap |= (1 << i);
301 else
302 ListenMap |= (1 << i);
303 }
304
305 if ((Card->SerialIdResponse > Result) || (Result == 0xFF))
306 Result = Card->SerialIdResponse;
307 }
308
309 /* Release passive cards from the isolation state */
310 if (ResponseMap != 0 && ListenMap != 0)
311 {
312 for (i = 0; i < RTL_BITS_OF(ListenMap); ++i)
313 {
314 if (ListenMap & (1 << i))
315 {
317
318 Card->State = IsaSleep;
319 }
320 }
321 }
322
323 return Result;
324}
PISAPNP_CARD IsapCard
Definition: isabus.c:14
@ IsaSleep
Definition: precomp.h:103
@ IsaIsolation
Definition: precomp.h:104
uint32_t ULONG
Definition: typedefs.h:59
_At_(*)(_In_ PWSK_CLIENT Client, _In_opt_ PUNICODE_STRING NodeName, _In_opt_ PUNICODE_STRING ServiceName, _In_opt_ ULONG NameSpace, _In_opt_ GUID *Provider, _In_opt_ PADDRINFOEXW Hints, _Outptr_ PADDRINFOEXW *Result, _In_opt_ PEPROCESS OwningProcess, _In_opt_ PETHREAD OwningThread, _Inout_ PIRP Irp Result)(Mem)) NTSTATUS(WSKAPI *PFN_WSK_GET_ADDRESS_INFO
Definition: wsk.h:409

Referenced by IsaBusReadDataPortRegister().

◆ IsaBusResourceDataChecksum()

static UCHAR IsaBusResourceDataChecksum ( _In_ PUCHAR  PnpRom,
_In_ ULONG  RomSize 
)
static

Definition at line 413 of file isabus.c.

416{
418 UNREFERENCED_PARAMETER(RomSize);
419
420 /* This means "Checksummed properly" */
421 return 0x00;
422}
#define UNREFERENCED_PARAMETER(P)
Definition: ntbasedef.h:325

Referenced by IsaBusCreateCard().

◆ IsaBusWriteAddressRegister()

static VOID IsaBusWriteAddressRegister ( _In_ UCHAR  Value)
static

Definition at line 38 of file isabus.c.

40{
41 ULONG i;
42
44
45 for (i = 0; i < IsapCardCount; ++i)
46 {
48
49 if (Card->State != IsaWaitForKey)
50 continue;
51
52 /* Reset the LFSR contents */
53 if (Card->Lfsr != Value)
54 {
55 Card->Lfsr = ISAPNP_LFSR_SEED;
56 Card->LfsrCount = 0;
57 continue;
58 }
59
60 /* Generate the next data pattern */
61 Card->Lfsr = IsaBusNextLFSR(Card->Lfsr, 0);
62
63 /* 32 bytes of the initiation key compared correctly */
64 if (++Card->LfsrCount == 32)
65 {
66 Card->State = IsaSleep;
67 }
68 }
69}
_Must_inspect_result_ _In_ WDFKEY _In_ PCUNICODE_STRING _Out_opt_ PUSHORT _Inout_opt_ PUNICODE_STRING Value
Definition: wdfregistry.h:413

Referenced by WRITE_PORT_UCHAR().

◆ IsaBusWriteDataRegister()

static VOID IsaBusWriteDataRegister ( _In_ UCHAR  Value)
static

Definition at line 73 of file isabus.c.

75{
76 ULONG i, j;
77
78 switch (IsapAddressLatch)
79 {
80 case ISAPNP_READPORT:
81 {
82 /* Update the address of the Read Data Port */
83 for (i = 0; i < IsapCardCount; ++i)
84 {
86
87 if (Card->State != IsaIsolation)
88 continue;
89
90 Card->ReadDataPort = (PUCHAR)(((ULONG_PTR)Value << 2) | 3);
91 }
92 break;
93 }
94
96 {
98 {
100 }
101
102 for (i = 0; i < IsapCardCount; ++i)
103 {
105
106 if (Card->State != IsaWaitForKey)
107 {
109 {
110 for (j = 0; j < Card->LogicalDevices; ++j)
111 {
112 PISAPNP_CARD_LOGICAL_DEVICE LogDev = &Card->LogDev[j];
113
114 LogDev->Registers[ISAPNP_ACTIVATE] = 0;
115 }
116 }
118 {
119 Card->SelectNumberReg = 0;
120 }
121 }
123 {
124 Card->State = IsaWaitForKey;
125 }
126 }
127 break;
128 }
129
130 case ISAPNP_WAKE:
131 {
132 for (i = 0; i < IsapCardCount; ++i)
133 {
135
136 if (Card->State == IsaWaitForKey)
137 continue;
138
139 if (Card->SelectNumberReg != Value)
140 {
141 if (Card->State == IsaConfgure || Card->State == IsaIsolation)
142 {
143 Card->State = IsaSleep;
144
145 if (IsapConfigureCard == Card)
146 {
148 }
149 }
150
151 continue;
152 }
153
154 Card->RomIdx = 0;
155 Card->SerialIsolationIdx = 0;
156
157 if (Card->State == IsaSleep)
158 {
159 if (Value == 0)
160 {
161 Card->State = IsaIsolation;
162
163 Card->IsolationRead = 0;
164 }
165 else
166 {
167 Card->State = IsaConfgure;
168
169 /* Only one card can be in the configure state */
171 }
172 }
173 }
174
175 break;
176 }
177
179 {
180 ULONG CsnAssigned = 0;
181
182 /* Assign the CSN */
183 for (i = 0; i < IsapCardCount; ++i)
184 {
186
187 if (Card->State != IsaIsolation)
188 continue;
189
190 ok(Value != 0, "The new CSN is zero\n");
191 ok(Card->SelectNumberReg != Value, "CSNs must be assigned sequentially");
192
193 Card->State = IsaConfgure;
194 Card->SelectNumberReg = Value;
195
196 /* Only one card can be in the configure state */
198
199 ++CsnAssigned;
200 ok_eq_ulong(CsnAssigned, 1UL);
201 }
202 break;
203 }
204
206 {
207 ok(IsapConfigureCard != NULL, "Invalid write to a LDN register\n");
208
209 if (IsapConfigureCard != NULL)
210 {
211 ok(IsapConfigureCard->LogicalDevices != 0, "Write to a read-only register\n");
212 ok(Value < IsapConfigureCard->LogicalDevices, "Invalid write to a LDN register\n");
213
215 }
216 break;
217 }
218
219 case ISAPNP_ACTIVATE:
220 {
221 Value &= 0x01;
222 goto WriteDeviceRegister;
223 }
224
226 {
227 Value &= 0x03;
228 goto WriteDeviceRegister;
229 }
230
233 case ISAPNP_STATUS:
234 {
235 ok(FALSE, "Write to a read-only register %02x\n", IsapAddressLatch);
236 break;
237 }
238
239 default:
240 {
241 if (IsapAddressLatch >= 0x40)
242 {
244
245WriteDeviceRegister:
246 ok(IsapConfigureCard != NULL, "Invalid write to device register\n");
247
248 if (IsapConfigureCard != NULL)
249 {
251
253 }
254 }
255 else
256 {
257 ok(FALSE, "Unexpected write to register %02x\n", IsapAddressLatch);
258 }
259 break;
260 }
261 }
262}
#define ok_eq_ulong(value, expected)
Definition: apitest.h:63
#define ISAPNP_CONFIG_RESET
Definition: isapnphw.h:52
#define ISAPNP_READPORT
Definition: isapnphw.h:22
#define ISAPNP_WAKE
Definition: isapnphw.h:25
#define ISAPNP_CONFIG_WAIT_FOR_KEY
Definition: isapnphw.h:53
#define ISAPNP_CONFIGCONTROL
Definition: isapnphw.h:24
#define ISAPNP_CONFIG_RESET_CSN
Definition: isapnphw.h:54
@ IsaConfgure
Definition: precomp.h:105
ULONG LogicalDevices
Definition: precomp.h:129
uint32_t ULONG_PTR
Definition: typedefs.h:65

Referenced by WRITE_PORT_UCHAR().

◆ READ_PORT_UCHAR()

UCHAR NTAPI READ_PORT_UCHAR ( _In_ PUCHAR  Port)

Definition at line 480 of file isabus.c.

482{
484
485 /* We can write only to NT Read Data Ports */
486 switch ((ULONG_PTR)Port)
487 {
488 case 0x2F4 | 3:
490 break;
491
492 /* Indicate that the Read Data Port is in conflict */
493 case 0x274 | 3:
494 case 0x3E4 | 3:
495 case 0x204 | 3:
496 case 0x2E4 | 3:
497 case 0x354 | 3:
498 Result = 0x00;
499 break;
500
501 default:
502 ok(FALSE, "Unexpected read from port %p\n", Port);
503 Result = 0xFF;
504 break;
505 }
506
507 return Result;
508}
static UCHAR IsaBusReadDataPortRegister(_In_ PUCHAR Port)
Definition: isabus.c:328

◆ WRITE_PORT_UCHAR()

VOID NTAPI WRITE_PORT_UCHAR ( _In_ PUCHAR  Port,
_In_ UCHAR  Value 
)

Definition at line 458 of file isabus.c.

461{
462 switch ((ULONG_PTR)Port)
463 {
464 case 0x279:
466 break;
467
468 case 0xA79:
470 break;
471
472 default:
473 ok(FALSE, "Unexpected write to port %p %02x\n", Port, Value);
474 break;
475 }
476}
static VOID IsaBusWriteDataRegister(_In_ UCHAR Value)
Definition: isabus.c:73
static VOID IsaBusWriteAddressRegister(_In_ UCHAR Value)
Definition: isabus.c:38

Variable Documentation

◆ IsapAddressLatch

UCHAR IsapAddressLatch = 0
static

◆ IsapCard

◆ IsapCardCount

ULONG IsapCardCount = 0
static

◆ IsapConfigureCard

PISAPNP_CARD IsapConfigureCard = NULL
static

Definition at line 16 of file isabus.c.

Referenced by IsaBusReadDataPortRegister(), and IsaBusWriteDataRegister().