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[ISAPNP] Reduce software delay

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This commit is contained in:
Dmitry Borisov 2021-03-20 20:52:04 +06:00
parent 8ed43b6907
commit d6dca83baf
1 changed files with 7 additions and 20 deletions
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27
drivers/bus/isapnp/hardware.c
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@ -292,14 +292,6 @@ ReadMemoryLimit32(
return ReadDoubleWord(ReadDataPort, ISAPNP_MEMLIMIT32(Index)); return ReadDoubleWord(ReadDataPort, ISAPNP_MEMLIMIT32(Index));
} }
static
inline
VOID
HwDelay(VOID)
{
KeStallExecutionProcessor(1000);
}
static static
inline inline
UCHAR UCHAR
@ -320,7 +312,6 @@ SendKey(VOID)
{ {
UCHAR i, Lfsr; UCHAR i, Lfsr;
HwDelay();
WriteAddress(0x00); WriteAddress(0x00);
WriteAddress(0x00); WriteAddress(0x00);
@ -347,7 +338,7 @@ PeekByte(
if (ReadStatus(ReadDataPort) & 0x01) if (ReadStatus(ReadDataPort) & 0x01)
return ReadResourceData(ReadDataPort); return ReadResourceData(ReadDataPort);
HwDelay(); KeStallExecutionProcessor(1000);
} }
return 0xFF; return 0xFF;
@ -1196,20 +1187,19 @@ TryIsolate(
SendKey(); SendKey();
ResetCsn(); ResetCsn();
HwDelay(); KeStallExecutionProcessor(2000);
HwDelay();
WaitForKey(); WaitForKey();
SendKey(); SendKey();
Wake(0x00); Wake(0x00);
KeStallExecutionProcessor(1000);
SetReadDataPort(ReadDataPort); SetReadDataPort(ReadDataPort);
HwDelay();
while (TRUE) while (TRUE)
{ {
EnterIsolationState(); EnterIsolationState();
HwDelay(); KeStallExecutionProcessor(1000);
RtlZeroMemory(&Identifier, sizeof(Identifier)); RtlZeroMemory(&Identifier, sizeof(Identifier));
@ -1220,9 +1210,9 @@ TryIsolate(
for (j = 0; j < 8; j++) for (j = 0; j < 8; j++)
{ {
Data = ReadData(ReadDataPort); Data = ReadData(ReadDataPort);
HwDelay(); KeStallExecutionProcessor(250);
Data = ((Data << 8) | ReadData(ReadDataPort)); Data = ((Data << 8) | ReadData(ReadDataPort));
HwDelay(); KeStallExecutionProcessor(250);
Byte >>= 1; Byte >>= 1;
if (Data != 0xFFFF) if (Data != 0xFFFF)
@ -1269,10 +1259,9 @@ TryIsolate(
Csn++; Csn++;
WriteCsn(Csn); WriteCsn(Csn);
HwDelay(); KeStallExecutionProcessor(1000);
Wake(0x00); Wake(0x00);
HwDelay();
} }
WaitForKey(); WaitForKey();
@ -1300,8 +1289,6 @@ DeviceActivation(
else else
DeactivateDevice(IsaDevice->LDN); DeactivateDevice(IsaDevice->LDN);
HwDelay();
WaitForKey(); WaitForKey();
} }