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- Simplify the code for connecting the interrupts.

Browse source 
Don't use three code pathes (keyboard; mouse; keyboard & mouse) anymore and don't check again in EnableInterrupts(), which devices are present.
  Instead prepare the flags for i8042ChangeMode() already in StartProcedure() and pass them later.
- Constify the result of CTRL_SELF_TEST (0x55) as KBD_SELF_TEST_OK.
- Add a bug number as a reference for the system flag setting.

svn path=/trunk/; revision=32718
This commit is contained in:
Colin Finck 2008-03-18 12:00:29 +00:00
parent 2755d2da2f
commit 9050d4be23
2 changed files with 25 additions and 52 deletions
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1
reactos/drivers/input/i8042prt/i8042prt.h
View file

@ -240,6 +240,7 @@ typedef struct _I8042_HOOK_WORKITEM
* Keyboard responses
* --------------------------------------------------*/
#define KBD_SELF_TEST_OK 0x55
#define KBD_ACK 0xFA
#define KBD_NACK 0xFC
#define KBD_RESEND 0xFE

76
reactos/drivers/input/i8042prt/pnp.c
View file

@ -106,7 +106,7 @@ i8042BasicDetect(
KeStallExecutionProcessor(50);
continue;
}
else if (Value != 0x55)
else if (Value != KBD_SELF_TEST_OK)
{
WARN_(I8042PRT, "Got 0x%02x instead of 0x55\n", Value);
return STATUS_IO_DEVICE_ERROR;
@ -156,7 +156,7 @@ i8042DetectKeyboard(
WARN_(I8042PRT, "Warning: can't write SET_LEDS (0x%08lx)\n", Status);
}
/* Turn on translation and SF (Some machines don't reboot if SF is not set) */
/* Turn on translation and SF (Some machines don't reboot if SF is not set, see ReactOS bug #1842) */
if (!i8042ChangeMode(DeviceExtension, 0, CCB_TRANSLATE | CCB_SYSTEM_FLAG))
return FALSE;
@ -337,24 +337,12 @@ cleanup:
static NTSTATUS
EnableInterrupts(
IN PPORT_DEVICE_EXTENSION DeviceExtension)
IN PPORT_DEVICE_EXTENSION DeviceExtension,
IN UCHAR FlagsToDisable,
IN UCHAR FlagsToEnable)
{
UCHAR FlagsToDisable = 0;
UCHAR FlagsToEnable = 0;
i8042Flush(DeviceExtension);
/* Select the devices we have */
if (DeviceExtension->Flags & KEYBOARD_PRESENT)
{
FlagsToDisable |= CCB_KBD_DISAB;
FlagsToEnable |= CCB_KBD_INT_ENAB;
}
if (DeviceExtension->Flags & MOUSE_PRESENT)
{
FlagsToDisable |= CCB_MOUSE_DISAB;
FlagsToEnable |= CCB_MOUSE_INT_ENAB;
}
if (!i8042ChangeMode(DeviceExtension, FlagsToDisable, FlagsToEnable))
return STATUS_UNSUCCESSFUL;
@ -379,6 +367,8 @@ StartProcedure(
IN PPORT_DEVICE_EXTENSION DeviceExtension)
{
NTSTATUS Status;
UCHAR FlagsToDisable = 0;
UCHAR FlagsToEnable = 0;
if (DeviceExtension->DataPort == 0)
{
@ -409,58 +399,40 @@ StartProcedure(
}
/* Connect interrupts */
Status = STATUS_SUCCESS;
if (DeviceExtension->Flags & KEYBOARD_PRESENT &&
DeviceExtension->Flags & KEYBOARD_CONNECTED &&
DeviceExtension->Flags & KEYBOARD_STARTED &&
!(DeviceExtension->Flags & (MOUSE_PRESENT | KEYBOARD_INITIALIZED)))
!(DeviceExtension->Flags & KEYBOARD_INITIALIZED))
{
/* No mouse, and the keyboard is ready */
/* Keyboard is ready to be initialized */
Status = i8042ConnectKeyboardInterrupt(DeviceExtension->KeyboardExtension);
if (NT_SUCCESS(Status))
{
DeviceExtension->Flags |= KEYBOARD_INITIALIZED;
Status = EnableInterrupts(DeviceExtension);
FlagsToDisable |= CCB_KBD_DISAB;
FlagsToEnable |= CCB_KBD_INT_ENAB;
}
}
else if (DeviceExtension->Flags & MOUSE_PRESENT &&
DeviceExtension->Flags & MOUSE_CONNECTED &&
DeviceExtension->Flags & MOUSE_STARTED &&
!(DeviceExtension->Flags & (KEYBOARD_PRESENT | MOUSE_INITIALIZED)))
if (DeviceExtension->Flags & MOUSE_PRESENT &&
DeviceExtension->Flags & MOUSE_CONNECTED &&
DeviceExtension->Flags & MOUSE_STARTED &&
!(DeviceExtension->Flags & MOUSE_INITIALIZED))
{
/* No keyboard, and the mouse is ready */
/* Mouse is ready to be initialized */
Status = i8042ConnectMouseInterrupt(DeviceExtension->MouseExtension);
if (NT_SUCCESS(Status))
{
DeviceExtension->Flags |= MOUSE_INITIALIZED;
Status = EnableInterrupts(DeviceExtension);
FlagsToDisable |= CCB_MOUSE_DISAB;
FlagsToEnable |= CCB_MOUSE_INT_ENAB;
}
}
else if (DeviceExtension->Flags & KEYBOARD_PRESENT &&
DeviceExtension->Flags & KEYBOARD_CONNECTED &&
DeviceExtension->Flags & KEYBOARD_STARTED &&
DeviceExtension->Flags & MOUSE_PRESENT &&
DeviceExtension->Flags & MOUSE_CONNECTED &&
DeviceExtension->Flags & MOUSE_STARTED &&
!(DeviceExtension->Flags & (KEYBOARD_INITIALIZED | MOUSE_INITIALIZED)))
{
/* The keyboard and mouse are ready */
Status = i8042ConnectKeyboardInterrupt(DeviceExtension->KeyboardExtension);
if (NT_SUCCESS(Status))
{
DeviceExtension->Flags |= KEYBOARD_INITIALIZED;
Status = i8042ConnectMouseInterrupt(DeviceExtension->MouseExtension);
if (NT_SUCCESS(Status))
{
DeviceExtension->Flags |= MOUSE_INITIALIZED;
Status = EnableInterrupts(DeviceExtension);
}
}
}
else
{
/* Nothing to do */
Status = STATUS_SUCCESS;
}
if(FlagsToEnable)
Status = EnableInterrupts(DeviceExtension, FlagsToDisable, FlagsToEnable);
return Status;
}