/** @file
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*
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* Copyright (c) 2019 Linaro, Limited. All rights reserved.
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* Copyright (c) 2019 Andrei Warkentin <andrey.warkentin@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause-Patent
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*
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**/
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#include <IndustryStandard/Bcm2711.h>
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#include "AcpiTables.h"
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/*
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* The following can be used to remove parenthesis from
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* defined macros that the compiler complains about.
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*/
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#define ISOLATE_ARGS(...) __VA_ARGS__
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#define REMOVE_PARENTHESES(x) ISOLATE_ARGS x
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#define SANITIZED_PCIE_CPU_MMIO_WINDOW REMOVE_PARENTHESES(PCIE_CPU_MMIO_WINDOW)
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#define SANITIZED_PCIE_REG_BASE REMOVE_PARENTHESES(PCIE_REG_BASE)
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/*
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* According to UEFI boot log for the VLI device on Pi 4.
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*/
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#define XHCI_REG_LENGTH 0x1000
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DefinitionBlock (__FILE__, "SSDT", 5, "RPIFDN", "RPI4XHCI", 2)
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{
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Scope (\_SB_)
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{
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Device (SCB0) {
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Name (_HID, "ACPI0004")
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Name (_UID, 0x0)
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Name (_CCA, 0x0)
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Method (_CRS, 0, Serialized) { // _CRS: Current Resource Settings
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/*
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* Container devices with _DMA must have _CRS, meaning SCB0
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* to provide all resources that XHC0 consumes (except
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* interrupts).
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*/
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Name (RBUF, ResourceTemplate () {
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QWordMemory (ResourceProducer,
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,
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MinFixed,
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MaxFixed,
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NonCacheable,
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ReadWrite,
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0x0,
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SANITIZED_PCIE_CPU_MMIO_WINDOW, // MIN
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SANITIZED_PCIE_CPU_MMIO_WINDOW, // MAX
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0x0,
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0x1, // LEN
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,
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,
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MMIO
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)
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})
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CreateQwordField (RBUF, MMIO._MAX, MMBE)
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CreateQwordField (RBUF, MMIO._LEN, MMLE)
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Add (MMBE, XHCI_REG_LENGTH - 1, MMBE)
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Add (MMLE, XHCI_REG_LENGTH - 1, MMLE)
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Return (RBUF)
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}
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Name (_DMA, ResourceTemplate() {
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/*
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* XHC0 is limited to DMA to first 3GB. Note this
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* only applies to PCIe, not GENET or other devices
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* next to the A72.
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*/
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QWordMemory (ResourceProducer,
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,
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MinFixed,
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MaxFixed,
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NonCacheable,
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ReadWrite,
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0x0,
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0x0, // MIN
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0xbfffffff, // MAX
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0x0, // TRA
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0xc0000000, // LEN
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,
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,
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)
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})
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Device (XHC0)
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{
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Name (_HID, "PNP0D10") // _HID: Hardware ID
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Name (_UID, 0x0) // _UID: Unique ID
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Name (_CCA, 0x0) // _CCA: Cache Coherency Attribute
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Method (_CRS, 0, Serialized) { // _CRS: Current Resource Settings
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Name (RBUF, ResourceTemplate () {
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QWordMemory (ResourceConsumer,
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,
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MinFixed,
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MaxFixed,
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NonCacheable,
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ReadWrite,
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0x0,
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SANITIZED_PCIE_CPU_MMIO_WINDOW, // MIN
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SANITIZED_PCIE_CPU_MMIO_WINDOW, // MAX
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0x0,
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0x1, // LEN
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,
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,
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MMIO
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)
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Interrupt (ResourceConsumer, Level, ActiveHigh, Exclusive, ,, ) {
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175
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}
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})
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CreateQwordField (RBUF, MMIO._MAX, MMBE)
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CreateQwordField (RBUF, MMIO._LEN, MMLE)
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Add (MMBE, XHCI_REG_LENGTH - 1, MMBE)
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Add (MMLE, XHCI_REG_LENGTH - 1, MMLE)
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Return (RBUF)
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}
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Method (_INI, 0, Serialized) {
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OperationRegion (PCFG, SystemMemory, SANITIZED_PCIE_REG_BASE + PCIE_EXT_CFG_DATA, 0x1000)
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Field (PCFG, AnyAcc, NoLock, Preserve) {
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VNID, 16, // Vendor ID
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DVID, 16, // Device ID
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CMND, 16, // Command register
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STAT, 16, // Status register
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}
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// Set command register to:
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// 1) decode MMIO (set bit 1)
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// 2) enable DMA (set bit 2)
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// 3) enable interrupts (clear bit 10)
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Debug = "xHCI enable"
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Store (0x6, CMND)
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}
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/*
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* Microsoft's USB Device-Specific Methods. See:
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* https://docs.microsoft.com/en-us/windows-hardware/drivers/bringup/usb-device-specific-method---dsm-
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*/
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Name (DSMU, ToUUID ("ce2ee385-00e6-48cb-9f05-2edb927c4899"))
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Method (_DSM, 4, Serialized) {
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If (LEqual (Arg0, DSMU)) { // USB capabilities UUID
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Switch (ToInteger (Arg2)) {
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Case (0) { // Function 0: List of supported functions
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Return (Buffer () { 0x41 }) // 0x41 - Functions 0 and 6 supported
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}
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Case (6) { // Function 6: RegisterAccessType
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Return (Buffer () { 0x01 }) // 0x01 - Must use 32bit register access
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}
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Default { } // Unsupported
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}
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}
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return (Buffer () { 0x00 }) // Return 0x00 for anything unsupported
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}
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} // end XHC0
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} //end SCB0
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} //end scope sb
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} //end definition block
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