#include "ehci.h"
#include <drv_pci.h>
#include <limits.h>
+#include <events.h>
+#include <timers.h>
// === CONSTANTS ===
#define EHCI_MAX_CONTROLLERS 4
+#define EHCI_THREADEVENT_IOC THREAD_EVENT_USER1
+#define EHCI_THREADEVENT_PORTSC THREAD_EVENT_USER2
// === PROTOTYPES ===
int EHCI_Initialise(char **Arguments);
);
void *EHCI_SendBulk(void *Ptr, void *Dest, tUSBHostCb Cb, void *CbData, int Dir, void *Data, size_t Length);
void EHCI_FreeOp(void *Ptr, void *Handle);
+Uint32 EHCI_int_RootHub_FeatToMask(int Feat);
+void EHCI_RootHub_SetPortFeature(void *Ptr, int Port, int Feat);
+void EHCI_RootHub_ClearPortFeature(void *Ptr, int Port, int Feat);
+ int EHCI_RootHub_GetPortStatus(void *Ptr, int Port, int Flag);
// --- Internals ---
tEHCI_qTD *EHCI_int_AllocateTD(tEHCI_Controller *Cont, int PID, void *Data, size_t Length, tUSBHostCb Cb, void *CbData);
void EHCI_int_DeallocateTD(tEHCI_Controller *Cont, tEHCI_qTD *TD);
-void EHCI_int_AppendTD(tEHCI_QH *QH, tEHCI_qTD *TD);
+void EHCI_int_AppendTD(tEHCI_Controller *Cont, tEHCI_QH *QH, tEHCI_qTD *TD);
tEHCI_QH *EHCI_int_AllocateQH(tEHCI_Controller *Cont, int Endpoint, size_t MaxPacketSize);
void EHCI_int_DeallocateQH(tEHCI_Controller *Cont, tEHCI_QH *QH);
+void EHCI_int_InterruptThread(void *ControllerPtr);
// === GLOBALS ===
MODULE_DEFINE(0, VERSION, USB_EHCI, EHCI_Initialise, NULL, "USB_Core", NULL);
tUSBHostDef gEHCI_HostDef = {
.InitInterrupt = EHCI_InitInterrupt,
.InitIsoch = EHCI_InitIsoch,
+ .InitControl = EHCI_InitControl,
.InitBulk = EHCI_InitBulk,
.RemEndpoint = EHCI_RemEndpoint,
.SendIsoch = NULL,
.SendControl = EHCI_SendControl,
.SendBulk = EHCI_SendBulk,
- .FreeOp = EHCI_FreeOp
+ .FreeOp = EHCI_FreeOp,
+
+ .CheckPorts = NULL, // No need
+ .SetPortFeature = EHCI_RootHub_SetPortFeature,
+ .ClearPortFeature = EHCI_RootHub_ClearPortFeature,
+ .GetPortStatus = EHCI_RootHub_GetPortStatus,
};
// === CODE ===
break;
}
}
-
if(!cont) {
- Log_Notice("EHCI", "Too many controllers (EHCI_MAX_CONTROLLERS=%i)", EHCI_MAX_CONTROLLERS);
+ Log_Notice("EHCI", "Too many controllers (EHCI_MAX_CONTROLLERS=%i)",
+ EHCI_MAX_CONTROLLERS);
return 1;
}
+ // - Nuke a couple of fields so error handling code doesn't derp
+ cont->CapRegs = NULL;
+ cont->PeriodicQueue = NULL;
+ cont->TDPool = NULL;
+
// -- Build up structure --
cont->CapRegs = (void*)MM_MapHWPages(BaseAddress, 1);
+ if( !cont->CapRegs ) {
+ Log_Warning("EHCI", "Can't map 1 page at %P into kernel space", BaseAddress);
+ goto _error;
+ }
// TODO: Error check
+ if( (cont->CapRegs->CapLength & 3) ) {
+ Log_Warning("EHCI", "Controller at %P non-aligned op regs", BaseAddress);
+ goto _error;
+ }
cont->OpRegs = (void*)( (Uint32*)cont->CapRegs + cont->CapRegs->CapLength / 4 );
// - Allocate periodic queue
- cont->PeriodicQueue = (void*)MM_AllocDMA(1, 32, NULL);
+ tPAddr unused;
+ cont->PeriodicQueue = (void*)MM_AllocDMA(1, 32, &unused);
+ if( !cont->PeriodicQueue ) {
+ Log_Warning("ECHI", "Can't allocate 1 32-bit page for periodic queue");
+ goto _error;
+ }
+ for( int i = 0; i < 1024; i ++ )
+ cont->PeriodicQueue[i] = 1;
// TODO: Error check
// > Populate queue
+ // - Allocate TD pool
+ cont->TDPool = (void*)MM_AllocDMA(1, 32, &unused);
+ if( !cont->TDPool ) {
+ Log_Warning("ECHI", "Can't allocate 1 32-bit page for qTD pool");
+ goto _error;
+ }
+ for( int i = 0; i < TD_POOL_SIZE; i ++ ) {
+ cont->TDPool[i].Token = 3 << 8;
+ }
+
+ // Get port count
+ cont->nPorts = cont->CapRegs->HCSParams & 0xF;
+
// -- Bind IRQ --
IRQ_AddHandler(InterruptNum, EHCI_InterruptHandler, cont);
+ cont->InterruptThread = Proc_SpawnWorker(EHCI_int_InterruptThread, cont);
+ if( !cont->InterruptThread ) {
+ Log_Warning("EHCI", "Can't spawn interrupt worker thread");
+ goto _error;
+ }
+ LOG("cont->InterruptThread = %p", cont->InterruptThread);
// -- Initialisation procedure (from ehci-r10) --
// - Reset controller
cont->OpRegs->USBCmd = (0x40 << 16) | USBCMD_PeriodicEnable | USBCMD_Run;
// - Route all ports
cont->OpRegs->ConfigFlag = 1;
-
+
+ cont->DeadTD = EHCI_int_AllocateTD(cont, 0, NULL, 0, NULL, NULL);
+ cont->DeadTD->Link = 1;
+ cont->DeadTD->Link2 = 1;
+ cont->DeadTD->Token = 0;
+
+ // -- Register with USB Core --
+ cont->RootHub = USB_RegisterHost(&gEHCI_HostDef, cont, cont->nPorts);
+
return 0;
+_error:
+ cont->PhysBase = 0;
+ if( cont->CapRegs )
+ MM_Deallocate( (tVAddr)cont->CapRegs );
+ if( cont->PeriodicQueue )
+ MM_Deallocate( (tVAddr)cont->PeriodicQueue );
+ if( cont->TDPool )
+ MM_Deallocate( (tVAddr)cont->TDPool );
+ return 2;
}
void EHCI_InterruptHandler(int IRQ, void *Ptr)
{
- tEHCI_Controller *cont = Ptr;
- Uint32 sts = cont->OpRegs->USBSts;
+ tEHCI_Controller *Cont = Ptr;
+ Uint32 sts = Cont->OpRegs->USBSts;
// Clear interrupts
- cont->OpRegs->USBSts = sts;
+ Cont->OpRegs->USBSts = sts;
if( sts & 0xFFFF0FC0 ) {
LOG("Oops, reserved bits set (%08x), funny hardware?", sts);
if( sts & USBINTR_IOC ) {
// IOC
+ Threads_PostEvent(Cont->InterruptThread, EHCI_THREADEVENT_IOC);
sts &= ~USBINTR_IOC;
}
if( sts & USBINTR_PortChange ) {
// Port change, determine what port and poke helper thread
LOG("Port status change");
+ Threads_PostEvent(Cont->InterruptThread, EHCI_THREADEVENT_PORTSC);
sts &= ~USBINTR_PortChange;
}
if( Period > 256 )
Period = 256;
+ LOG("Endpoint=%x, bOutbound=%i, Period=%i, Length=%i", Endpoint, bOutbound, Period, Length);
+
// Round the period to the closest power of two
pow2period = 1;
period_pow = 0;
tEHCI_QH *qh = EHCI_int_AllocateQH(Cont, Endpoint, Length);
qh->Impl.IntPeriodPow = period_pow;
+ Mutex_Acquire(&Cont->PeriodicListLock);
+
// Choose an interrupt slot to use
int minslot = 0, minslot_load = INT_MAX;
for( int slot = 0; slot < Period; slot ++ )
}
}
// Increase loading on the selected slot
- for( int i = 0; i < PERIODIC_SIZE; i += Period )
- Cont->InterruptLoad[i+minslot] += Length;
+ for( int i = minslot; i < PERIODIC_SIZE; i += Period )
+ Cont->InterruptLoad[i] += Length;
qh->Impl.IntOfs = minslot;
// Allocate TD for the data
tEHCI_qTD *td = EHCI_int_AllocateTD(Cont, (bOutbound ? PID_OUT : PID_IN), Buf, Length, Cb, CbData);
- EHCI_int_AppendTD(qh, td);
+ EHCI_int_AppendTD(Cont, qh, td);
// Insert into the periodic list
+ for( int i = 0; i < PERIODIC_SIZE; i += Period )
+ {
+ // Walk list until
+ // - the end is reached
+ // - this QH is found
+ // - A QH with a lower period is encountered
+ tEHCI_QH *pqh = NULL;
+ tEHCI_QH *nqh;
+ for( nqh = Cont->PeriodicQueueV[i]; nqh; pqh = nqh, nqh = nqh->Impl.Next )
+ {
+ if( nqh == qh )
+ break;
+ if( nqh->Impl.IntPeriodPow < period_pow )
+ break;
+ }
+
+ // Somehow, we've already been added to this queue.
+ if( nqh && nqh == qh )
+ continue ;
+
+ if( qh->Impl.Next && qh->Impl.Next != nqh ) {
+ Log_Warning("EHCI", "Suspected bookkeeping error on %p - int list %i+%i overlap",
+ Cont, period_pow, minslot);
+ break;
+ }
+
+ if( nqh ) {
+ qh->Impl.Next = nqh;
+ qh->HLink = MM_GetPhysAddr(nqh) | 2;
+ }
+ else {
+ qh->Impl.Next = NULL;
+ qh->HLink = 2|1; // QH, Terminate
+ }
+
+ if( pqh ) {
+ pqh->Impl.Next = qh;
+ pqh->HLink = MM_GetPhysAddr(qh) | 2;
+ }
+ else {
+ Cont->PeriodicQueueV[i] = qh;
+ Cont->PeriodicQueue[i] = MM_GetPhysAddr(qh) | 2;
+ }
+ }
+ Mutex_Release(&Cont->PeriodicListLock);
return qh;
}
// Allocate a QH
tEHCI_QH *qh = EHCI_int_AllocateQH(Cont, Endpoint, MaxPacketSize);
+ qh->CurrentTD = MM_GetPhysAddr(Cont->DeadTD);
// Append to async list
if( Cont->LastAsyncHead ) {
Cont->LastAsyncHead->HLink = MM_GetPhysAddr(qh)|2;
Cont->LastAsyncHead->Impl.Next = qh;
+ LOG("- Placed after %p", Cont->LastAsyncHead);
}
- else
+ else {
Cont->OpRegs->AsyncListAddr = MM_GetPhysAddr(qh)|2;
+ }
+ qh->HLink = Cont->OpRegs->AsyncListAddr;
+ Cont->OpRegs->USBCmd |= USBCMD_AsyncEnable;
Cont->LastAsyncHead = qh;
+ LOG("Created %p for %p Ep 0x%x - %i bytes MPS", qh, Ptr, Endpoint, MaxPacketSize);
+
return qh;
}
void *EHCI_InitBulk(void *Ptr, int Endpoint, size_t MaxPacketSize)
else if( (tVAddr)Handle <= 256*16 )
return ; // Isoch
else {
+ tEHCI_QH *qh = Ptr;
+
// Remove QH from list
// - If it's a polling endpoint, need to remove from all periodic lists
+ if( qh->Impl.IntPeriodPow != 0xFF) {
+ // Poll
+ }
+ else {
+ // GP
+ }
// Deallocate QH
EHCI_int_DeallocateQH(Ptr, Handle);
if( (tVAddr)Dest <= 256*16 )
return NULL;
+ LOG("Dest=%p, isOutbound=%i, Lengths(Setup:%i,Out:%i,In:%i)", Dest, isOutbound, SetupLength, OutLength, InLength);
+
// Check size of SETUP and status
// Allocate TDs
td_setup = EHCI_int_AllocateTD(Cont, PID_SETUP, (void*)SetupData, SetupLength, NULL, NULL);
if( isOutbound )
{
- td_data = EHCI_int_AllocateTD(Cont, PID_OUT, (void*)OutData, OutLength, NULL, NULL);
+ td_data = OutData ? EHCI_int_AllocateTD(Cont, PID_OUT, (void*)OutData, OutLength, NULL, NULL) : NULL;
td_status = EHCI_int_AllocateTD(Cont, PID_IN, InData, InLength, Cb, CbData);
}
else
{
- td_data = EHCI_int_AllocateTD(Cont, PID_IN, InData, InLength, NULL, NULL);
+ td_data = InData ? EHCI_int_AllocateTD(Cont, PID_IN, InData, InLength, NULL, NULL) : NULL;
td_status = EHCI_int_AllocateTD(Cont, PID_OUT, (void*)OutData, OutLength, Cb, CbData);
+ td_status->Token |= (1 << 15); // IOC
}
// Append TDs
- EHCI_int_AppendTD(Dest, td_setup);
- EHCI_int_AppendTD(Dest, td_data);
- EHCI_int_AppendTD(Dest, td_status);
+ if( td_data ) {
+ td_setup->Link = MM_GetPhysAddr(td_data);
+ td_data->Link = MM_GetPhysAddr(td_status) | 1;
+ td_data->Token |= (1 << 8); // Active
+ }
+ else {
+ td_setup->Link = MM_GetPhysAddr(td_status) | 1;
+ }
+ td_setup->Token |= (1 << 8); // Active
+ td_status->Token |= (1 << 8);
+ EHCI_int_AppendTD(Cont, Dest, td_setup);
return td_status;
}
// Allocate single TD
tEHCI_qTD *td = EHCI_int_AllocateTD(Cont, (Dir ? PID_OUT : PID_IN), Data, Length, Cb, CbData);
- EHCI_int_AppendTD(Dest, td);
+ EHCI_int_AppendTD(Cont, Dest, td);
return td;
}
EHCI_int_DeallocateTD(Cont, Handle);
}
+Uint32 EHCI_int_RootHub_FeatToMask(int Feat)
+{
+ switch(Feat)
+ {
+ case PORT_RESET: return PORTSC_PortReset;
+ case PORT_ENABLE: return PORTSC_PortEnabled;
+ default:
+ Log_Warning("EHCI", "Unknown root hub port feature %i", Feat);
+ return 0;
+ }
+}
+
+void EHCI_RootHub_SetPortFeature(void *Ptr, int Port, int Feat)
+{
+ tEHCI_Controller *Cont = Ptr;
+ if(Port >= Cont->nPorts) return;
+
+ Cont->OpRegs->PortSC[Port] |= EHCI_int_RootHub_FeatToMask(Feat);
+}
+
+void EHCI_RootHub_ClearPortFeature(void *Ptr, int Port, int Feat)
+{
+ tEHCI_Controller *Cont = Ptr;
+ if(Port >= Cont->nPorts) return;
+
+ Cont->OpRegs->PortSC[Port] &= ~EHCI_int_RootHub_FeatToMask(Feat);
+}
+
+int EHCI_RootHub_GetPortStatus(void *Ptr, int Port, int Flag)
+{
+ tEHCI_Controller *Cont = Ptr;
+ if(Port >= Cont->nPorts) return 0;
+
+ return !!(Cont->OpRegs->PortSC[Port] & EHCI_int_RootHub_FeatToMask(Flag));
+}
+
// --------------------------------------------------------------------
// Internals
// --------------------------------------------------------------------
+tEHCI_qTD *EHCI_int_GetTDFromPhys(tEHCI_Controller *Cont, Uint32 Addr)
+{
+ if( Addr == 0 ) return NULL;
+ LOG("%p + (%x - %x)", Cont->TDPool, Addr, MM_GetPhysAddr(Cont->TDPool));
+ return Cont->TDPool + (Addr - MM_GetPhysAddr(Cont->TDPool))/sizeof(tEHCI_qTD);
+}
+
tEHCI_qTD *EHCI_int_AllocateTD(tEHCI_Controller *Cont, int PID, void *Data, size_t Length, tUSBHostCb Cb, void *CbData)
{
+// Semaphore_Wait(&Cont->TDSemaphore, 1);
+ Mutex_Acquire(&Cont->TDPoolMutex);
+ for( int i = 0; i < TD_POOL_SIZE; i ++ )
+ {
+ if( ((Cont->TDPool[i].Token >> 8) & 3) != 3 )
+ continue ;
+ Cont->TDPool[i].Token = (PID << 8) | (Length << 16);
+ // NOTE: Assumes that `Length` is <= PAGE_SIZE
+ Cont->TDPool[i].Pages[0] = MM_GetPhysAddr(Data);
+ if( (Cont->TDPool[i].Pages[0] & (PAGE_SIZE-1)) + Length - 1 > PAGE_SIZE )
+ Cont->TDPool[i].Pages[1] = MM_GetPhysAddr((char*)Data + Length - 1) & ~(PAGE_SIZE-1);
+ Mutex_Release(&Cont->TDPoolMutex);
+ LOG("Allocated %p for PID %i on %p", &Cont->TDPool[i], PID, Cont);
+ return &Cont->TDPool[i];
+ }
+
+ Mutex_Release(&Cont->TDPoolMutex);
return NULL;
}
void EHCI_int_DeallocateTD(tEHCI_Controller *Cont, tEHCI_qTD *TD)
{
+ UNIMPLEMENTED();
}
-void EHCI_int_AppendTD(tEHCI_QH *QH, tEHCI_qTD *TD)
+void EHCI_int_AppendTD(tEHCI_Controller *Cont, tEHCI_QH *QH, tEHCI_qTD *TD)
{
+ tEHCI_qTD *ptd = NULL;
+ Uint32 link = QH->CurrentTD;
+
+ // TODO: Need locking and validation here
+ while( link && !(link & 1) )
+ {
+ ptd = EHCI_int_GetTDFromPhys(Cont, link);
+ link = ptd->Link;
+ }
+ // TODO: Figure out how to follow this properly
+ if( !ptd ) {
+ QH->CurrentTD = MM_GetPhysAddr(TD);
+ LOG("Appended %p to beginning of %p", TD, QH);
+ }
+ else {
+ ptd->Link = MM_GetPhysAddr(TD);
+ LOG("Appended %p to end of %p", TD, QH);
+ }
}
tEHCI_QH *EHCI_int_AllocateQH(tEHCI_Controller *Cont, int Endpoint, size_t MaxPacketSize)
{
+ tEHCI_QH *ret;
+ Mutex_Acquire(&Cont->QHPoolMutex);
+ for( int i = 0; i < QH_POOL_SIZE; i ++ )
+ {
+ if( !MM_GetPhysAddr( Cont->QHPools[i/QH_POOL_NPERPAGE] ) ) {
+ tPAddr tmp;
+ Cont->QHPools[i/QH_POOL_NPERPAGE] = (void*)MM_AllocDMA(1, 32, &tmp);
+ memset(Cont->QHPools[i/QH_POOL_NPERPAGE], 0, PAGE_SIZE);
+ }
+
+ ret = &Cont->QHPools[i/QH_POOL_NPERPAGE][i%QH_POOL_NPERPAGE];
+ if( ret->HLink == 0 ) {
+ ret->HLink = 1;
+ ret->Overlay.Link = 1;
+ ret->Endpoint = (Endpoint >> 4) | 0x80 | ((Endpoint & 0xF) << 8)
+ | (MaxPacketSize << 16);
+ // TODO: Endpoint speed (13:12) 0:Full, 1:Low, 2:High
+ // TODO: Control Endpoint Flag (27) 0:*, 1:Full/Low Control
+ Mutex_Release(&Cont->QHPoolMutex);
+ return ret;
+ }
+ }
+ Mutex_Release(&Cont->QHPoolMutex);
return NULL;
}
void EHCI_int_DeallocateQH(tEHCI_Controller *Cont, tEHCI_QH *QH)
{
+ // TODO: Ensure it's unused (somehow)
+ QH->HLink = 0;
}
+void EHCI_int_HandlePortConnectChange(tEHCI_Controller *Cont, int Port)
+{
+ // Connect Event
+ if( Cont->OpRegs->PortSC[Port] & PORTSC_CurrentConnectStatus )
+ {
+ // Is the device low-speed?
+ if( (Cont->OpRegs->PortSC[Port] & PORTSC_LineStatus_MASK) == PORTSC_LineStatus_Kstate )
+ {
+ LOG("Low speed device on %p Port %i, giving to companion", Cont, Port);
+ Cont->OpRegs->PortSC[Port] |= PORTSC_PortOwner;
+ }
+ // not a low-speed device, EHCI reset
+ else
+ {
+ LOG("Device connected on %p #%i", Cont, Port);
+ // Reset procedure.
+ USB_PortCtl_BeginReset(Cont->RootHub, Port);
+ }
+ }
+ // Disconnect Event
+ else
+ {
+ if( Cont->OpRegs->PortSC[Port] & PORTSC_PortOwner ) {
+ LOG("Companion port %i disconnected, taking it back", Port);
+ Cont->OpRegs->PortSC[Port] &= ~PORTSC_PortOwner;
+ }
+ else {
+ LOG("Port %i disconnected", Port);
+ USB_DeviceDisconnected(Cont->RootHub, Port);
+ }
+ }
+}
+
+void EHCI_int_InterruptThread(void *ControllerPtr)
+{
+ tEHCI_Controller *Cont = ControllerPtr;
+ while(Cont->OpRegs)
+ {
+ Uint32 events;
+
+ LOG("sleeping for events");
+ events = Threads_WaitEvents(EHCI_THREADEVENT_IOC|EHCI_THREADEVENT_PORTSC);
+ if( !events ) {
+ // TODO: Should this cause a termination?
+ }
+ LOG("events = 0x%x", events);
+
+ if( events & EHCI_THREADEVENT_IOC )
+ {
+ // IOC, Do whatever it is you do
+ }
+
+ // Port status change interrupt
+ if( events & EHCI_THREADEVENT_PORTSC )
+ {
+ // Check for port status changes
+ for(int i = 0; i < Cont->nPorts; i ++ )
+ {
+ Uint32 sts = Cont->OpRegs->PortSC[i];
+ LOG("Port %i: sts = %x", i, sts);
+ Cont->OpRegs->PortSC[i] = sts;
+ if( sts & PORTSC_ConnectStatusChange )
+ EHCI_int_HandlePortConnectChange(Cont, i);
+
+ if( sts & PORTSC_PortEnableChange )
+ {
+ // Handle enable/disable
+ }
+
+ if( sts & PORTSC_OvercurrentChange )
+ {
+ // Handle over-current change
+ }
+ }
+ }
+
+ LOG("Going back to sleep");
+ }
+}
git.ucc.asn.au / tpg / acess2.git / blobdiff
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