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/** @file
Super I/O specific implementation.
Copyright (c) 2010 - 2020 Intel Corporation. All rights reserved. <BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include "SioDriver.h"
//
// System configuration (setup) information
//
// SYSTEM_CONFIGURATION mSystemConfiguration;
//
// COM 1 UART Controller
//
ACPI_SIO_RESOURCES_IO_IRQ mCom1Resources = {
{
{ ACPI_FIXED_LOCATION_IO_PORT_DESCRIPTOR },
FixedPcdGet16 (PcdUart1IoPort),
FixedPcdGet8 (PcdUart1Length)
},
{
{ ACPI_IRQ_NOFLAG_DESCRIPTOR },
FixedPcdGet16 (PcdUart1IrqMask)
},
{
ACPI_END_TAG_DESCRIPTOR,
0
}
};
//
// COM 2 UART Controller
//
ACPI_SIO_RESOURCES_IO_IRQ mCom2Resources = {
{
{ ACPI_FIXED_LOCATION_IO_PORT_DESCRIPTOR },
FixedPcdGet16 (PcdUart2IoPort),
FixedPcdGet8 (PcdUart2Length)
},
{
{ ACPI_IRQ_NOFLAG_DESCRIPTOR },
FixedPcdGet16 (PcdUart2IrqMask),
},
{
ACPI_END_TAG_DESCRIPTOR,
0
}
};
//
// PS/2 Keyboard Controller
//
ACPI_SIO_RESOURCES_IO_IRQ mKeyboardResources = {
{
{ ACPI_FIXED_LOCATION_IO_PORT_DESCRIPTOR },
0x60,
5
},
{
{ ACPI_IRQ_NOFLAG_DESCRIPTOR },
BIT1
},
{
ACPI_END_TAG_DESCRIPTOR,
0
}
};
//
// PS/2 Mouse Controller
//
ACPI_SIO_RESOURCES_IO_IRQ mMouseResources = {
{
{ ACPI_FIXED_LOCATION_IO_PORT_DESCRIPTOR },
0x60,
5
},
{
{ ACPI_IRQ_NOFLAG_DESCRIPTOR },
BIT12
},
{
ACPI_END_TAG_DESCRIPTOR,
0
}
};
//
// Table of SIO Controllers
//
DEVICE_INFO mDeviceInfo[] = {
#if FixedPcdGet8 (PcdUart1Enable) == DEVICE_ENABLED
{
{
EISA_PNP_ID(0x501),
0
},
0,
RESOURCE_IO | RESOURCE_IRQ,
{ (ACPI_SMALL_RESOURCE_HEADER *) &mCom1Resources },
{ (ACPI_SMALL_RESOURCE_HEADER *) &mCom1Resources }
}, // COM 1 UART Controller
#endif
#if FixedPcdGet8 (PcdUart2Enable) == DEVICE_ENABLED
{
{
EISA_PNP_ID(0x501),
0
},
0,
RESOURCE_IO | RESOURCE_IRQ,
{ (ACPI_SMALL_RESOURCE_HEADER *) &mCom2Resources },
{ (ACPI_SMALL_RESOURCE_HEADER *) &mCom2Resources }
}, // COM 2 UART Controller
#endif
#if FixedPcdGet8 (PcdPs2KbMsEnable) == DEVICE_ENABLED
{
{
EISA_PNP_ID(0x303),
0
},
0,
0, // Cannot change resource
{ (ACPI_SMALL_RESOURCE_HEADER *) &mKeyboardResources },
{ (ACPI_SMALL_RESOURCE_HEADER *) &mKeyboardResources }
}, // PS/2 Keyboard Controller
{
{
EISA_PNP_ID(0xF03),
0
},
0,
0, // Cannot change resource
{ (ACPI_SMALL_RESOURCE_HEADER *) &mMouseResources },
{ (ACPI_SMALL_RESOURCE_HEADER *) &mMouseResources }
}, // PS/2 Mouse Controller
#endif
DEVICE_INFO_END
};
/**
Gets the number of devices in Table of SIO Controllers mDeviceInfo.
@retval Number of enabled devices in Table of SIO Controllers.
**/
UINTN
EFIAPI
GetDeviceCount (
VOID
)
{
UINTN Count;
// Get mDeviceInfo item count
// -1 to account for for the end device info
Count = ARRAY_SIZE (mDeviceInfo) - 1;
return Count;
}
/**
Return the supported devices.
@param[out] Devices Pointer to pointer of EFI_SIO_ACPI_DEVICE_ID.
Caller is responsible to free the buffer.
@param[out] Count Pointer to UINTN holding the device count.
**/
VOID
DeviceGetList (
OUT EFI_SIO_ACPI_DEVICE_ID **Devices,
OUT UINTN *Count
)
{
EFI_SIO_ACPI_DEVICE_ID *LocalDevices;
UINTN LocalCount;
UINTN DeviceCount;
UINTN Index;
//
// Allocate enough memory for simplicity
//
DeviceCount = GetDeviceCount ();
LocalDevices = AllocatePool (sizeof (EFI_SIO_ACPI_DEVICE_ID) * DeviceCount);
ASSERT (LocalDevices != NULL);
if (LocalDevices == NULL) {
return;
}
LocalCount = 0;
for (Index = 0; Index < DeviceCount; Index++) {
CopyMem (&LocalDevices[LocalCount], &mDeviceInfo[Index].Device, sizeof (EFI_SIO_ACPI_DEVICE_ID));
LocalCount++;
}
*Devices = LocalDevices;
*Count = LocalCount;
}
/**
Super I/O controller initialization.
@retval EFI_SUCCESS The super I/O controller is found and initialized.
@retval EFI_UNSUPPORTED The super I/O controller is not found.
**/
EFI_STATUS
SioInit (
VOID
)
{
return EFI_SUCCESS;
}
/**
Find the DEVICE_INFO for specified Device.
@param[in] Device Pointer to the EFI_SIO_ACPI_DEVICE_ID.
@retval DEVICE_INFO* Pointer to the DEVICE_INFO.
**/
DEVICE_INFO *
DeviceSearch (
IN EFI_SIO_ACPI_DEVICE_ID *Device
)
{
UINTN Index;
UINTN DeviceCount;
DeviceCount = GetDeviceCount ();
for (Index = 0; Index < DeviceCount; Index++) {
if (CompareMem (Device, &mDeviceInfo[Index].Device, sizeof (*Device)) == 0) {
return &mDeviceInfo[Index];
}
}
ASSERT (FALSE);
return NULL;
}
/**
Program the SIO chip to enable the specified device using the default resource.
@param[in] Device Pointer to EFI_SIO_ACPI_DEVICE_ID.
**/
VOID
DeviceEnable (
IN EFI_SIO_ACPI_DEVICE_ID *Device
)
{
}
/**
Get the ACPI resources for specified device.
@param[in] Device Pointer to EFI_SIO_ACPI_DEVICE_ID.
@param[out] Resources Pointer to ACPI_RESOURCE_HEADER_PTR.
@retval EFI_SUCCESS The resources are returned successfully.
**/
EFI_STATUS
DeviceGetResources (
IN EFI_SIO_ACPI_DEVICE_ID *Device,
OUT ACPI_RESOURCE_HEADER_PTR *Resources
)
{
DEVICE_INFO *DeviceInfo;
DeviceInfo = DeviceSearch (Device);
*Resources = DeviceInfo->Resources;
return EFI_SUCCESS;
}
/**
Set the ACPI resources for specified device.
The SIO chip is programmed to use the new resources and the
resources setting are saved. The function assumes the resources
are valid.
@param[in] Device Pointer to EFI_SIO_ACPI_DEVICE_ID.
@param[in] Resources ACPI_RESOURCE_HEADER_PTR.
@retval EFI_UNSUPPORTED
**/
EFI_STATUS
DeviceSetResources (
IN EFI_SIO_ACPI_DEVICE_ID *Device,
IN ACPI_RESOURCE_HEADER_PTR Resources
)
{
return EFI_UNSUPPORTED;
}
/**
Get the possible ACPI resources for specified device.
@param[in] Device Pointer to EFI_SIO_ACPI_DEVICE_ID.
@param[out] Resources Pointer to ACPI_RESOURCE_HEADER_PTR.
@retval EFI_SUCCESS The resources are returned successfully.
**/
EFI_STATUS
DevicePossibleResources (
IN EFI_SIO_ACPI_DEVICE_ID *Device,
OUT ACPI_RESOURCE_HEADER_PTR *Resources
)
{
DEVICE_INFO *DeviceInfo;
DeviceInfo = DeviceSearch (Device);
*Resources = DeviceInfo->PossibleResources;
return EFI_SUCCESS;
}
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