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CloverBootloader/rEFIt_UEFI/Platform/usbfix.cpp

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/*
* usbfix.c
*
* Created by Slice on 21.09.11.
*
* based on works by mackerintel 2008, orByte 2006, Signal64, THeKiNG
*/
#include <Platform.h> // Only use angled for Platform, else, xcode project won't compile
#include <Efi.h>
#ifndef DEBUG_ALL
#define DEBUG_USB 1
#else
#define DEBUG_USB DEBUG_ALL
#endif
#if DEBUG_USB == 0
#define DBG(...)
#else
#define DBG(...) DebugLog(DEBUG_USB, __VA_ARGS__)
#endif
#define PCI_IF_OHCI 0x10
#define PCI_IF_XHCI 0x30
#define OHCI_CTRL_MASK (1 << 9)
#define OHCI_CONTROL 0x04
#define OHCI_INTRDISABLE 0x14
#define OHCI_INTRSTATUS 0x0c
EFI_STATUS
FixOwnership(void)
/*++
Routine Description:
Disable the USB legacy Support in all Ehci and Uhci.
This function assume all PciIo handles have been created in system.
Slice - added also OHCI and more advanced algo. Better then known to Intel and Apple :)
Arguments:
None
Returns:
EFI_SUCCESS
EFI_NOT_FOUND
--*/
{
DBG("FixOwnership() -> begin\n");
EFI_STATUS Status;
EFI_HANDLE *HandleArray = NULL;
UINTN HandleArrayCount = 0;
UINTN Index;
EFI_PCI_IO_PROTOCOL *PciIo;
PCI_TYPE00 Pci;
UINT16 Command;
UINT32 HcCapParams;
UINT32 ExtendCap;
UINT32 Value;
INT32 TimeOut;
UINT32 Base;
UINT32 PortBase;
volatile UINT32 opaddr;
// UINT8 eecp;
UINT32 usbcmd, usbsts, usbintr;
UINT32 usblegsup, usblegctlsts;
UINTN isOSowned;
UINTN isBIOSowned;
BOOLEAN isOwnershipConflict;
//
// Find the usb host controller
//
Status = gBS->LocateHandleBuffer (
ByProtocol,
&gEfiPciIoProtocolGuid,
NULL,
&HandleArrayCount,
&HandleArray
);
if (!EFI_ERROR(Status)) {
for (Index = 0; Index < HandleArrayCount; Index++) {
Status = gBS->HandleProtocol (
HandleArray[Index],
&gEfiPciIoProtocolGuid,
(void **)&PciIo
);
if (!EFI_ERROR(Status)) {
//
// Find the USB host controller
//
Status = PciIo->Pci.Read (
PciIo,
EfiPciIoWidthUint32,
0,
sizeof (Pci) / sizeof (UINT32),
&Pci
);
if (!EFI_ERROR(Status)) {
if ((PCI_CLASS_SERIAL == Pci.Hdr.ClassCode[2]) &&
(PCI_CLASS_SERIAL_USB == Pci.Hdr.ClassCode[1])) {
switch (Pci.Hdr.ClassCode[0]) {
case PCI_IF_UHCI:
//
// Found the UHCI, then disable the legacy support
//
Base = 0;
Status = PciIo->Pci.Read(PciIo, EfiPciIoWidthUint32, 0x20, 1, &Base);
PortBase = (Base >> 5) & 0x07ff;
DBG("USB UHCI Base=%X PortBase=%X\n", Base, PortBase);
Command = 0x8f00;
Status = PciIo->Pci.Write (PciIo, EfiPciIoWidthUint16, 0xC0, 1, &Command);
if (PortBase && (PortBase & BIT0) == 0) {
IoWrite16 (PortBase, 0x0002);
gBS->Stall (500);
IoWrite16 (PortBase+4, 0);
gBS->Stall (500);
IoWrite16 (PortBase, 0);
}
MsgLog("USB UHCI reset for device %04hX\n", Pci.Hdr.DeviceId);
break;
/* case PCI_IF_OHCI:
Base = 0;
Status = PciIo->Pci.Read(PciIo, EfiPciIoWidthUint32, 0x10, 1, &Base);
Command = *(UINT32 *)(UINTN)(Base + OHCI_CONTROL);
*(UINT32 *)(UINTN)(Base + OHCI_CONTROL) = Command & OHCI_CTRL_MASK;
Command = *(UINT32 *)(UINTN)(Base + OHCI_CONTROL);
MsgLog("USB OHCI reset for device %04hhX control=0x%hhX\n", Pci.Hdr.DeviceId, Command);
break;*/
case PCI_IF_EHCI:
//Slice - the algo is reworked from Chameleon
// it looks like redundant but it works so I will not reduce it
//
// Found the EHCI, then disable the legacy support
//
Value = 0x0002;
PciIo->Pci.Write (PciIo, EfiPciIoWidthUint16, 0x04, 1, &Value);
Base = 0;
Status = PciIo->Pci.Read(PciIo, EfiPciIoWidthUint32, 0x10, 1, &Base);
if (*((UINT8*)(UINTN)Base) < 0x0C) {
DBG("Config space too small: no legacy implementation\n");
break;
}
// opaddr = Operational Registers = capaddr + offset (8bit CAPLENGTH in Capability Registers + offset 0)
opaddr = Base + *((UINT8*)(UINTN)(Base));
// eecp = EHCI Extended Capabilities offset = capaddr HCCPARAMS bits 15:8
//UEFI
Status = PciIo->Mem.Read (
PciIo,
EfiPciIoWidthUint32,
0, //EHC_BAR_INDEX
(UINT64) 0x08, //EHC_HCCPARAMS_OFFSET
1,
&HcCapParams
);
ExtendCap = (HcCapParams >> 8) & 0xFF;
DBG("Base=%X Oper=%X eecp=%X\n", Base, opaddr, ExtendCap);
usbcmd = *((UINT32*)(UINTN)(opaddr)); // Command Register
usbsts = *((UINT32*)(UINTN)(opaddr + 4)); // Status Register
usbintr = *((UINT32*)(UINTN)(opaddr + 8)); // Interrupt Enable Register
DBG("usbcmd=%08X usbsts=%08X usbintr=%08X\n", usbcmd, usbsts, usbintr);
// read PCI Config 32bit USBLEGSUP (eecp+0)
Status = PciIo->Pci.Read(PciIo, EfiPciIoWidthUint32, ExtendCap, 1, &usblegsup);
// informational only
isBIOSowned = !!((usblegsup) & (1 << (16)));
isOSowned = !!((usblegsup) & (1 << (24)));
// read PCI Config 32bit USBLEGCTLSTS (eecp+4)
PciIo->Pci.Read (PciIo, EfiPciIoWidthUint32, ExtendCap + 0x4, 1, &usblegctlsts);
DBG("usblegsup=%08X isOSowned=%llu isBIOSowned=%llu usblegctlsts=%08X\n", usblegsup, isOSowned, isBIOSowned, usblegctlsts);
//
// Disable the SMI in USBLEGCTLSTS firstly
//
usblegctlsts &= 0xFFFF0000;
PciIo->Pci.Write (PciIo, EfiPciIoWidthUint32, ExtendCap + 0x4, 1, &usblegctlsts);
//double
// if delay value is in milliseconds it doesn't appear to work.
// setting value to anything up to 65535 does not add the expected delay here.
gBS->Stall (500);
usbcmd = *((UINT32*)(UINTN)(opaddr)); // Command Register
usbsts = *((UINT32*)(UINTN)(opaddr + 4)); // Status Register
usbintr = *((UINT32*)(UINTN)(opaddr + 8)); // Interrupt Enable Register
DBG("usbcmd=%08X usbsts=%08X usbintr=%08X\n", usbcmd, usbsts, usbintr);
// clear registers to default
usbcmd = (usbcmd & 0xffffff00);
*((UINT32*)(UINTN)(opaddr)) = usbcmd;
*((UINT32*)(UINTN)(opaddr + 8)) = 0; //usbintr - clear interrupt registers
*((UINT32*)(UINTN)(opaddr + 4)) = 0x1000; //usbsts - clear status registers
Value = 1;
PciIo->Pci.Write (PciIo, EfiPciIoWidthUint32, ExtendCap, 1, &Value);
// get the results
usbcmd = *((UINT32*)(UINTN)(opaddr)); // Command Register
usbsts = *((UINT32*)(UINTN)(opaddr + 4)); // Status Register
usbintr = *((UINT32*)(UINTN)(opaddr + 8)); // Interrupt Enable Register
MsgLog("usbcmd=%08X usbsts=%08X usbintr=%08X\n", usbcmd, usbsts, usbintr);
// read 32bit USBLEGSUP (eecp+0)
PciIo->Pci.Read (PciIo, EfiPciIoWidthUint32, ExtendCap, 1, &usblegsup);
// informational only
isBIOSowned = !!((usblegsup) & (1 << (16)));
isOSowned = !!((usblegsup) & (1 << (24)));
// read 32bit USBLEGCTLSTS (eecp+4)
PciIo->Pci.Read (PciIo, EfiPciIoWidthUint32, ExtendCap + 0x4, 1, &usblegctlsts);
DBG("usblegsup=%08X isOSowned=%llu isBIOSowned=%llu usblegctlsts=%08X\n", usblegsup, isOSowned, isBIOSowned, usblegctlsts);
MsgLog("Legacy USB Off Done\n");
//
// Get EHCI Ownership from legacy bios
//
PciIo->Pci.Read (PciIo, EfiPciIoWidthUint32, ExtendCap, 1, &usblegsup);
isOwnershipConflict = isBIOSowned && isOSowned;
if (isOwnershipConflict) {
DBG("EHCI - Ownership conflict - attempting soft reset ...\n");
Value = 0;
PciIo->Pci.Write (PciIo, EfiPciIoWidthUint8, ExtendCap + 3, 1, &Value);
TimeOut = 40;
while (TimeOut--) {
gBS->Stall (500);
PciIo->Pci.Read (PciIo, EfiPciIoWidthUint32, ExtendCap, 1, &Value);
if ((Value & 0x01000000) == 0x0) {
break;
}
}
}
PciIo->Pci.Read (PciIo, EfiPciIoWidthUint32, ExtendCap, 1, &Value);
Value |= (0x1 << 24);
PciIo->Pci.Write (PciIo, EfiPciIoWidthUint32, ExtendCap, 1, &Value);
TimeOut = 40;
while (TimeOut--) {
gBS->Stall (500);
PciIo->Pci.Read (PciIo, EfiPciIoWidthUint32, ExtendCap, 1, &Value);
if ((Value & 0x00010000) == 0x0) {
break;
}
}
isOwnershipConflict = ((Value & 0x00010000) != 0x0);
if (isOwnershipConflict) {
// Soft reset has failed. Assume SMI being ignored
// Hard reset
DBG("Soft reset has failed - attempting hard reset ...\n");
Value = 0;
PciIo->Pci.Write (PciIo, EfiPciIoWidthUint8, ExtendCap + 2, 1, &Value);
TimeOut = 40;
while (TimeOut--) {
gBS->Stall (500);
PciIo->Pci.Read (PciIo, EfiPciIoWidthUint32, ExtendCap, 1, &Value);
if ((Value & 0x00010000) == 0x0) {
break;
}
}
// Disable further SMI events
PciIo->Pci.Read (PciIo, EfiPciIoWidthUint32, ExtendCap + 0x4, 1, &usblegctlsts);
usblegctlsts &= 0xFFFF0000;
PciIo->Pci.Write (PciIo, EfiPciIoWidthUint32, ExtendCap + 0x4, 1, &usblegctlsts);
}
if (Value & 0x00010000) {
MsgLog("EHCI controller unable to take control from BIOS\n");
Status = EFI_NOT_FOUND; //Slice - why? :)
break;
}
MsgLog("USB EHCI Ownership for device %04hX value=%X\n", Pci.Hdr.DeviceId, Value);
break;
case PCI_IF_XHCI:
//
// Found the XHCI, then disable the legacy support, if present
//
Status = PciIo->Mem.Read(PciIo, EfiPciIoWidthUint32, 0 /* BAR0 */, (UINT64) 0x10 /* HCCPARAMS1 */, 1, &HcCapParams);
ExtendCap = EFI_ERROR(Status) ? 0 : ((HcCapParams >> 14) & 0x3FFFC);
while (ExtendCap) {
Status = PciIo->Mem.Read(PciIo, EfiPciIoWidthUint32, 0 /* BAR0 */, (UINT64) ExtendCap, 1, &Value);
if (EFI_ERROR(Status))
break;
if ((Value & 0xFF) == 1) {
//
// Do nothing if Bios Ownership clear
//
if (!(Value & (0x1 << 16)))
break;
Value |= (0x1 << 24);
(void) PciIo->Mem.Write(PciIo, EfiPciIoWidthUint32, 0 /* BAR0 */, (UINT64) ExtendCap, 1, &Value);
TimeOut = 40;
while (TimeOut--) {
gBS->Stall(500);
Status = PciIo->Mem.Read(PciIo, EfiPciIoWidthUint32, 0 /* BAR0 */, (UINT64) ExtendCap, 1, &Value);
if (EFI_ERROR(Status) || !(Value & (0x1 << 16)))
break;
}
//
// Disable all SMI in USBLEGCTLSTS
//
Status = PciIo->Mem.Read(PciIo, EfiPciIoWidthUint32, 0 /* BAR0 */, (UINT64) ExtendCap + 4, 1, &Value);
if (EFI_ERROR(Status))
break;
Value &= 0x1F1FEE;
Value |= 0xE0000000;
(void) PciIo->Mem.Write(PciIo, EfiPciIoWidthUint32, 0 /* BAR0 */, (UINT64) ExtendCap + 4, 1, &Value);
//
// Clear all ownership
//
Status = PciIo->Mem.Read(PciIo, EfiPciIoWidthUint32, 0 /* BAR0 */, (UINT64) ExtendCap, 1, &Value);
if (EFI_ERROR(Status))
break;
Value &= ~((0x1 << 24) | (0x1 << 16));
(void) PciIo->Mem.Write(PciIo, EfiPciIoWidthUint32, 0 /* BAR0 */, (UINT64) ExtendCap, 1, &Value);
break;
} //Value & FF
if (!(Value & 0xFF00))
break;
ExtendCap += ((Value >> 6) & 0x3FC);
} //while ExtendCap
break;
default:
break;
} //switch class code
}
}
}
}
} else {
return Status;
}
gBS->FreePool(HandleArray);
return Status;
}
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