path: root/src/southbridge/intel/lynxpoint/acpi/serialio.asl

/* SPDX-License-Identifier: GPL-2.0-only */

// Intel Serial IO Devices in ACPI Mode

// Serial IO Device BAR0 and BAR1 is 4KB
#define SIO_BAR_LEN 0x1000

// This is defined in SSDT2 which is generated at boot based
// on whether or not the device is enabled in ACPI mode.
External (\S0EN)
External (\S1EN)
External (\S2EN)
External (\S3EN)
External (\S4EN)
External (\S5EN)
External (\S6EN)
External (\S7EN)

// Serial IO Resource Consumption for BAR1
Device (SIOR)
{
	Name (_HID, EISAID ("PNP0C02"))
	Name (_UID, 4)

	Name (RBUF, ResourceTemplate ()
	{
		// Serial IO BAR1 (PCI config space) resources
		Memory32Fixed (ReadWrite, 0x00000000, 0x00000000, B1D0) // SDMA
		Memory32Fixed (ReadWrite, 0x00000000, 0x00000000, B1D1) // I2C0
		Memory32Fixed (ReadWrite, 0x00000000, 0x00000000, B1D2) // I2C1
		Memory32Fixed (ReadWrite, 0x00000000, 0x00000000, B1D3) // SPI0
		Memory32Fixed (ReadWrite, 0x00000000, 0x00000000, B1D4) // SPI1
		Memory32Fixed (ReadWrite, 0x00000000, 0x00000000, B1D5) // UART0
		Memory32Fixed (ReadWrite, 0x00000000, 0x00000000, B1D6) // UART1
		Memory32Fixed (ReadWrite, 0x00000000, 0x00000000, B1D7) // SDIO
	})

	// Update BAR1 address and length if set in NVS
	Method (_CRS, 0, NotSerialized)
	{
		// SDMA
		If (\S0B1 != 0) {
			CreateDwordField (^RBUF, ^B1D0._BAS, B0AD)
			CreateDwordField (^RBUF, ^B1D0._LEN, B0LN)
			B0AD = \S0B1
			B0LN = SIO_BAR_LEN
		}

		// I2C0
		If (\S1B1 != 0) {
			CreateDwordField (^RBUF, ^B1D1._BAS, B1AD)
			CreateDwordField (^RBUF, ^B1D1._LEN, B1LN)
			B1AD = \S1B1
			B1LN = SIO_BAR_LEN
		}

		// I2C1
		If (\S2B1 != 0) {
			CreateDwordField (^RBUF, ^B1D2._BAS, B2AD)
			CreateDwordField (^RBUF, ^B1D2._LEN, B2LN)
			B2AD = \S2B1
			B2LN = SIO_BAR_LEN
		}

		// SPI0
		If (\S3B1 != 0) {
			CreateDwordField (^RBUF, ^B1D3._BAS, B3AD)
			CreateDwordField (^RBUF, ^B1D3._LEN, B3LN)
			B3AD = \S3B1
			B3LN = SIO_BAR_LEN
		}

		// SPI1
		If (\S4B1 != 0) {
			CreateDwordField (^RBUF, ^B1D4._BAS, B4AD)
			CreateDwordField (^RBUF, ^B1D4._LEN, B4LN)
			B4AD = \S4B1
			B4LN = SIO_BAR_LEN
		}

		// UART0
		If (\S5B1 != 0) {
			CreateDwordField (^RBUF, ^B1D5._BAS, B5AD)
			CreateDwordField (^RBUF, ^B1D5._LEN, B5LN)
			B5AD = \S5B1
			B5LN = SIO_BAR_LEN
		}

		// UART1
		If (\S6B1 != 0) {
			CreateDwordField (^RBUF, ^B1D6._BAS, B6AD)
			CreateDwordField (^RBUF, ^B1D6._LEN, B6LN)
			B6AD = \S6B1
			B6LN = SIO_BAR_LEN
		}

		// SDIO
		If (\S7B1 != 0) {
			CreateDwordField (^RBUF, ^B1D7._BAS, B7AD)
			CreateDwordField (^RBUF, ^B1D7._LEN, B7LN)
			B7AD = \S7B1
			B7LN = SIO_BAR_LEN
		}

		Return (RBUF)
	}
}

Device (SDMA)
{
	// Serial IO DMA Controller
	Name (_HID, "INTL9C60")
	Name (_UID, 1)

	// BAR0 is assigned during PCI enumeration and saved into NVS
	Name (RBUF, ResourceTemplate ()
	{
		Memory32Fixed (ReadWrite, 0x00000000, 0x00000000, BAR0)
		Interrupt (ResourceConsumer, Level, ActiveLow, Shared, , , ) {7}
	})

	Method (_CRS, 0, NotSerialized)
	{
		// Update BAR0 address and length if set in NVS
		If (\S0B0 != 0) {
			CreateDwordField (^RBUF, ^BAR0._BAS, B0AD)
			CreateDwordField (^RBUF, ^BAR0._LEN, B0LN)
			B0AD = \S0B0
			B0LN = SIO_BAR_LEN
		}

		Return (RBUF)
	}

	Method (_STA, 0, NotSerialized)
	{
		If (\S0EN == 0) {
			Return (0x0)
		} Else {
			Return (0xF)
		}
	}
}

Device (I2C0)
{
	// Serial IO I2C0 Controller
	Name (_HID, "INT33C2")
	Name (_CID, "INT33C2")
	Name (_UID, 1)

	Name (SSCN, Package () { 432, 507, 30 })
	Name (FMCN, Package () { 72, 160, 30 })

	// BAR0 is assigned during PCI enumeration and saved into NVS
	Name (RBUF, ResourceTemplate ()
	{
		Memory32Fixed (ReadWrite, 0x00000000, 0x00000000, BAR0)
		Interrupt (ResourceConsumer, Level, ActiveLow, Shared, , , ) {7}
	})

	// DMA channels are only used if Serial IO DMA controller is enabled
	Name (DBUF, ResourceTemplate ()
	{
		FixedDMA (0x18, 4, Width32Bit, DMA1) // Tx
		FixedDMA (0x19, 5, Width32Bit, DMA2) // Rx
	})

	Method (_CRS, 0, NotSerialized)
	{
		// Update BAR0 address and length if set in NVS
		If (\S1B0 != 0) {
			CreateDwordField (^RBUF, ^BAR0._BAS, B0AD)
			CreateDwordField (^RBUF, ^BAR0._LEN, B0LN)
			B0AD = \S1B0
			B0LN = SIO_BAR_LEN
		}

		// Check if Serial IO DMA Controller is enabled
		If (\_SB.PCI0.SDMA._STA != 0) {
			Return (ConcatenateResTemplate (RBUF, DBUF))
		} Else {
			Return (RBUF)
		}
	}

	Method (_STA, 0, NotSerialized)
	{
		If (\S1EN == 0) {
			Return (0x0)
		} Else {
			Return (0xF)
		}
	}

	// Access to PCI Config in ACPI mode
	OperationRegion (KEYS, SystemMemory, \S1B1, 0x100)
	Field (KEYS, DWordAcc, NoLock, Preserve)
	{
		Offset (0x84),
		PSAT, 32,
	}

	// Put controller in D0 state
	Method (_PS0, 0, Serialized)
	{
		^PSAT &= 0xfffffffc
		Local0 = ^PSAT // Read back after writing

		// Use Local0 to avoid iasl warning: Method Local is set but never used
		Local0 &= Ones
	}

	// Put controller in D3Hot state
	Method (_PS3, 0, Serialized)
	{
		^PSAT |= 0x00000003
		Local0 = ^PSAT // Read back after writing

		// Use Local0 to avoid iasl warning: Method Local is set but never used
		Local0 &= Ones
	}
}

Device (I2C1)
{
	// Serial IO I2C1 Controller
	Name (_HID, "INT33C3")
	Name (_CID, "INT33C3")
	Name (_UID, 1)

	Name (SSCN, Package () { 432, 507, 30 })
	Name (FMCN, Package () { 72, 160, 30 })

	// BAR0 is assigned during PCI enumeration and saved into NVS
	Name (RBUF, ResourceTemplate ()
	{
		Memory32Fixed (ReadWrite, 0x00000000, 0x00000000, BAR0)
		Interrupt (ResourceConsumer, Level, ActiveLow, Shared, , , ) {7}
	})

	// DMA channels are only used if Serial IO DMA controller is enabled
	Name (DBUF, ResourceTemplate ()
	{
		FixedDMA (0x1A, 6, Width32Bit, DMA1) // Tx
		FixedDMA (0x1B, 7, Width32Bit, DMA2) // Rx
	})

	Method (_CRS, 0, NotSerialized)
	{
		// Update BAR0 address and length if set in NVS
		If (\S2B0 != 0) {
			CreateDwordField (^RBUF, ^BAR0._BAS, B0AD)
			CreateDwordField (^RBUF, ^BAR0._LEN, B0LN)
			B0AD = \S2B0
			B0LN = SIO_BAR_LEN
		}

		// Check if Serial IO DMA Controller is enabled
		If (\_SB.PCI0.SDMA._STA != 0) {
			Return (ConcatenateResTemplate (RBUF, DBUF))
		} Else {
			Return (RBUF)
		}
	}

	Method (_STA, 0, NotSerialized)
	{
		If (\S2EN == 0) {
			Return (0x0)
		} Else {
			Return (0xF)
		}
	}

	// Access to PCI Config in ACPI mode
	OperationRegion (KEYS, SystemMemory, \S2B1, 0x100)
	Field (KEYS, DWordAcc, NoLock, Preserve)
	{
		Offset (0x84),
		PSAT, 32,
	}

	// Put controller in D0 state
	Method (_PS0, 0, Serialized)
	{
		^PSAT &= 0xfffffffc
		Local0 = ^PSAT // Read back after writing

		// Use Local0 to avoid iasl warning: Method Local is set but never used
		Local0 &= Ones
	}

	// Put controller in D3Hot state
	Method (_PS3, 0, Serialized)
	{
		^PSAT |= 0x00000003
		Local0 = ^PSAT // Read back after writing

		// Use Local0 to avoid iasl warning: Method Local is set but never used
		Local0 &= Ones
	}
}

Device (SPI0)
{
	// Serial IO SPI0 Controller
	Name (_HID, "INT33C0")
	Name (_CID, "INT33C0")
	Name (_UID, 1)

	// BAR0 is assigned during PCI enumeration and saved into NVS
	Name (RBUF, ResourceTemplate ()
	{
		Memory32Fixed (ReadWrite, 0x00000000, 0x00000000, BAR0)
		Interrupt (ResourceConsumer, Level, ActiveLow, Shared, , , ) {7}
	})

	Method (_CRS, 0, NotSerialized)
	{
		// Update BAR0 address and length if set in NVS
		If (\S3B0 != 0) {
			CreateDwordField (^RBUF, ^BAR0._BAS, B0AD)
			CreateDwordField (^RBUF, ^BAR0._LEN, B0LN)
			B0AD = \S3B0
			B0LN = SIO_BAR_LEN
		}

		Return (RBUF)
	}

	Method (_STA, 0, NotSerialized)
	{
		If (\S3EN == 0) {
			Return (0x0)
		} Else {
			Return (0xF)
		}
	}
}

Device (SPI1)
{
	// Serial IO SPI1 Controller
	Name (_HID, "INT33C1")
	Name (_CID, "INT33C1")
	Name (_UID, 1)

	// BAR0 is assigned during PCI enumeration and saved into NVS
	Name (RBUF, ResourceTemplate ()
	{
		Memory32Fixed (ReadWrite, 0x00000000, 0x00000000, BAR0)
		Interrupt (ResourceConsumer, Level, ActiveLow, Shared, , , ) {7}
	})

	// DMA channels are only used if Serial IO DMA controller is enabled
	Name (DBUF, ResourceTemplate ()
	{
		FixedDMA (0x10, 0, Width32Bit, DMA1) // Tx
		FixedDMA (0x11, 1, Width32Bit, DMA2) // Rx
	})

	Method (_CRS, 0, NotSerialized)
	{
		// Update BAR0 address and length if set in NVS
		If (\S4B0 != 0) {
			CreateDwordField (^RBUF, ^BAR0._BAS, B0AD)
			CreateDwordField (^RBUF, ^BAR0._LEN, B0LN)
			B0AD = \S4B0
			B0LN = SIO_BAR_LEN
		}

		// Check if Serial IO DMA Controller is enabled
		If (\_SB.PCI0.SDMA._STA != 0) {
			Return (ConcatenateResTemplate (RBUF, DBUF))
		} Else {
			Return (RBUF)
		}
	}

	Method (_STA, 0, NotSerialized)
	{
		If (\S4EN == 0) {
			Return (0x0)
		} Else {
			Return (0xF)
		}
	}
}

Device (UAR0)
{
	// Serial IO UART0 Controller
	Name (_HID, "INT33C4")
	Name (_CID, "INT33C4")
	Name (_UID, 1)

	// BAR0 is assigned during PCI enumeration and saved into NVS
	Name (RBUF, ResourceTemplate ()
	{
		Memory32Fixed (ReadWrite, 0x00000000, 0x00000000, BAR0)
		Interrupt (ResourceConsumer, Level, ActiveLow, Shared, , , ) {13}
	})

	// DMA channels are only used if Serial IO DMA controller is enabled
	Name (DBUF, ResourceTemplate ()
	{
		FixedDMA (0x16, 2, Width32Bit, DMA1) // Tx
		FixedDMA (0x17, 3, Width32Bit, DMA2) // Rx
	})

	Method (_CRS, 0, NotSerialized)
	{
		// Update BAR0 address and length if set in NVS
		If (\S5B0 != 0) {
			CreateDwordField (^RBUF, ^BAR0._BAS, B0AD)
			CreateDwordField (^RBUF, ^BAR0._LEN, B0LN)
			B0AD = \S5B0
			B0LN = SIO_BAR_LEN
		}

		// Check if Serial IO DMA Controller is enabled
		If (\_SB.PCI0.SDMA._STA != 0) {
			Return (ConcatenateResTemplate (RBUF, DBUF))
		} Else {
			Return (RBUF)
		}
	}

	Method (_STA, 0, NotSerialized)
	{
		If (\S5EN == 0) {
			Return (0x0)
		} Else {
			Return (0xF)
		}
	}
}

Device (UAR1)
{
	// Serial IO UART1 Controller
	Name (_HID, "INT33C5")
	Name (_CID, "INT33C5")
	Name (_UID, 1)

	// BAR0 is assigned during PCI enumeration and saved into NVS
	Name (RBUF, ResourceTemplate ()
	{
		Memory32Fixed (ReadWrite, 0x00000000, 0x00000000, BAR0)
		Interrupt (ResourceConsumer, Level, ActiveLow, Shared, , , ) {13}
	})

	Method (_CRS, 0, NotSerialized)
	{
		// Update BAR0 address and length if set in NVS
		If (\S6B0 != 0) {
			CreateDwordField (^RBUF, ^BAR0._BAS, B0AD)
			CreateDwordField (^RBUF, ^BAR0._LEN, B0LN)
			B0AD = \S6B0
			B0LN = SIO_BAR_LEN
		}

		Return (RBUF)
	}

	Method (_STA, 0, NotSerialized)
	{
		If (\S6EN == 0) {
			Return (0x0)
		} Else {
			Return (0xF)
		}
	}
}

Device (SDIO)
{
	// Serial IO SDIO Controller
	Name (_HID, "INT33C6")
	Name (_CID, "PNP0D40")
	Name (_UID, 1)

	// BAR0 is assigned during PCI enumeration and saved into NVS
	Name (RBUF, ResourceTemplate ()
	{
		Memory32Fixed (ReadWrite, 0x00000000, 0x00000000, BAR0)
		Interrupt (ResourceConsumer, Level, ActiveLow, Shared, , , ) {5}
	})

	Method (_CRS, 0, NotSerialized)
	{
		// Update BAR0 address and length if set in NVS
		If (\S7B0 != 0) {
			CreateDwordField (^RBUF, ^BAR0._BAS, B0AD)
			CreateDwordField (^RBUF, ^BAR0._LEN, B0LN)
			B0AD = \S7B0
			B0LN = SIO_BAR_LEN
		}

		Return (RBUF)
	}

	Method (_STA, 0, NotSerialized)
	{
		If (\S7EN == 0) {
			Return (0x0)
		} Else {
			Return (0xF)
		}
	}
}