3 * - By John Hodge (thePowersGang)
9 #define VERSION VER2(0,1)
18 #define EHCI_MAX_CONTROLLERS 4
21 int EHCI_Initialise(char **Arguments);
22 int EHCI_Cleanup(void);
23 int EHCI_InitController(tPAddr BaseAddress, Uint8 InterruptNum);
24 void EHCI_InterruptHandler(int IRQ, void *Ptr);
26 void *EHCI_InitInterrupt(void *Ptr, int Endpoint, int bInput, int Period, tUSBHostCb Cb, void *CbData, void *Buf, size_t Length);
27 void *EHCI_InitIsoch (void *Ptr, int Endpoint, size_t MaxPacketSize);
28 void *EHCI_InitControl(void *Ptr, int Endpoint, size_t MaxPacketSize);
29 void *EHCI_InitBulk (void *Ptr, int Endpoint, size_t MaxPacketSize);
30 void EHCI_RemEndpoint(void *Ptr, void *Handle);
31 void *EHCI_SendControl(void *Ptr, void *Dest, tUSBHostCb Cb, void *CbData,
33 const void *SetupData, size_t SetupLength,
34 const void *OutData, size_t OutLength,
35 void *InData, size_t InLength
37 void *EHCI_SendBulk(void *Ptr, void *Dest, tUSBHostCb Cb, void *CbData, int Dir, void *Data, size_t Length);
38 void EHCI_FreeOp(void *Ptr, void *Handle);
40 tEHCI_qTD *EHCI_int_AllocateTD(tEHCI_Controller *Cont, int PID, void *Data, size_t Length, tUSBHostCb Cb, void *CbData);
41 void EHCI_int_DeallocateTD(tEHCI_Controller *Cont, tEHCI_qTD *TD);
42 void EHCI_int_AppendTD(tEHCI_QH *QH, tEHCI_qTD *TD);
43 tEHCI_QH *EHCI_int_AllocateQH(tEHCI_Controller *Cont, int Endpoint, size_t MaxPacketSize);
44 void EHCI_int_DeallocateQH(tEHCI_Controller *Cont, tEHCI_QH *QH);
47 MODULE_DEFINE(0, VERSION, USB_EHCI, EHCI_Initialise, NULL, "USB_Core", NULL);
48 tEHCI_Controller gaEHCI_Controllers[EHCI_MAX_CONTROLLERS];
49 tUSBHostDef gEHCI_HostDef = {
50 .InitInterrupt = EHCI_InitInterrupt,
51 .InitIsoch = EHCI_InitIsoch,
52 .InitBulk = EHCI_InitBulk,
53 .RemEndpoint = EHCI_RemEndpoint,
55 .SendControl = EHCI_SendControl,
56 .SendBulk = EHCI_SendBulk,
61 int EHCI_Initialise(char **Arguments)
63 for( int id = -1; (id = PCI_GetDeviceByClass(0x0C0320, 0xFFFFFF, id)) >= 0; )
65 Uint32 addr = PCI_GetBAR(id, 0);
67 // Oops, PCI BIOS emulation time
69 Uint8 irq = PCI_GetIRQ(id);
74 Log_Log("ECHI", "Controller at PCI %i 0x%x IRQ 0x%x",
77 if( EHCI_InitController(addr, irq) )
79 // TODO: Detect other forms of failure than "out of slots"
83 // TODO: Register with the USB stack
88 int EHCI_Cleanup(void)
93 // --- Driver Init ---
94 int EHCI_InitController(tPAddr BaseAddress, Uint8 InterruptNum)
96 tEHCI_Controller *cont = NULL;
98 for( int i = 0; i < EHCI_MAX_CONTROLLERS; i ++ )
100 if( gaEHCI_Controllers[i].PhysBase == 0 ) {
101 cont = &gaEHCI_Controllers[i];
102 cont->PhysBase = BaseAddress;
108 Log_Notice("EHCI", "Too many controllers (EHCI_MAX_CONTROLLERS=%i)", EHCI_MAX_CONTROLLERS);
112 // -- Build up structure --
113 cont->CapRegs = (void*)MM_MapHWPages(BaseAddress, 1);
115 cont->OpRegs = (void*)( (Uint32*)cont->CapRegs + cont->CapRegs->CapLength / 4 );
116 // - Allocate periodic queue
117 cont->PeriodicQueue = (void*)MM_AllocDMA(1, 32, NULL);
122 IRQ_AddHandler(InterruptNum, EHCI_InterruptHandler, cont);
124 // -- Initialisation procedure (from ehci-r10) --
125 // - Reset controller
126 cont->OpRegs->USBCmd = USBCMD_HCReset;
127 // - Set CTRLDSSEGMENT (TODO: 64-bit support)
129 cont->OpRegs->USBIntr = USBINTR_IOC|USBINTR_PortChange|USBINTR_FrameRollover;
130 // - Set PERIODICLIST BASE
131 cont->OpRegs->PeridocListBase = MM_GetPhysAddr( cont->PeriodicQueue );
132 // - Enable controller
133 cont->OpRegs->USBCmd = (0x40 << 16) | USBCMD_PeriodicEnable | USBCMD_Run;
135 cont->OpRegs->ConfigFlag = 1;
140 void EHCI_InterruptHandler(int IRQ, void *Ptr)
142 tEHCI_Controller *cont = Ptr;
143 Uint32 sts = cont->OpRegs->USBSts;
146 cont->OpRegs->USBSts = sts;
148 if( sts & 0xFFFF0FC0 ) {
149 LOG("Oops, reserved bits set (%08x), funny hardware?", sts);
153 // Unmask read-only bits
156 if( sts & USBINTR_IOC ) {
161 if( sts & USBINTR_PortChange ) {
162 // Port change, determine what port and poke helper thread
163 LOG("Port status change");
164 sts &= ~USBINTR_PortChange;
167 if( sts & USBINTR_FrameRollover ) {
168 // Frame rollover, used to aid timing (trigger per-second operations)
169 LOG("Frame rollover");
170 sts &= ~USBINTR_FrameRollover;
174 // Unhandled interupt bits
176 LOG("WARN - Bitmask %x unhandled", sts);
182 // --------------------------------------------------------------------
184 // --------------------------------------------------------------------
185 void *EHCI_InitInterrupt(void *Ptr, int Endpoint, int bOutbound, int Period,
186 tUSBHostCb Cb, void *CbData, void *Buf, size_t Length)
188 tEHCI_Controller *Cont = Ptr;
189 int pow2period, period_pow;
191 if( Endpoint >= 256*16 )
198 // Round the period to the closest power of two
201 // - Find the first power above the period
202 while( pow2period < Period )
207 // - Check which is closest
208 if( Period - pow2period / 2 > pow2period - Period )
211 Period = pow2period/2;
216 tEHCI_QH *qh = EHCI_int_AllocateQH(Cont, Endpoint, Length);
217 qh->Impl.IntPeriodPow = period_pow;
219 // Choose an interrupt slot to use
220 int minslot = 0, minslot_load = INT_MAX;
221 for( int slot = 0; slot < Period; slot ++ )
224 for( int i = 0; i < PERIODIC_SIZE; i += Period )
225 load += Cont->InterruptLoad[i+slot];
226 if( load == 0 ) break;
227 if( load < minslot_load ) {
232 // Increase loading on the selected slot
233 for( int i = 0; i < PERIODIC_SIZE; i += Period )
234 Cont->InterruptLoad[i+minslot] += Length;
235 qh->Impl.IntOfs = minslot;
237 // Allocate TD for the data
238 tEHCI_qTD *td = EHCI_int_AllocateTD(Cont, (bOutbound ? PID_OUT : PID_IN), Buf, Length, Cb, CbData);
239 EHCI_int_AppendTD(qh, td);
241 // Insert into the periodic list
246 void *EHCI_InitIsoch(void *Ptr, int Endpoint, size_t MaxPacketSize)
248 return (void*)(tVAddr)(Endpoint + 1);
250 void *EHCI_InitControl(void *Ptr, int Endpoint, size_t MaxPacketSize)
252 tEHCI_Controller *Cont = Ptr;
255 tEHCI_QH *qh = EHCI_int_AllocateQH(Cont, Endpoint, MaxPacketSize);
257 // Append to async list
258 if( Cont->LastAsyncHead ) {
259 Cont->LastAsyncHead->HLink = MM_GetPhysAddr(qh)|2;
260 Cont->LastAsyncHead->Impl.Next = qh;
263 Cont->OpRegs->AsyncListAddr = MM_GetPhysAddr(qh)|2;
264 Cont->LastAsyncHead = qh;
268 void *EHCI_InitBulk(void *Ptr, int Endpoint, size_t MaxPacketSize)
270 return EHCI_InitControl(Ptr, Endpoint, MaxPacketSize);
272 void EHCI_RemEndpoint(void *Ptr, void *Handle)
276 else if( (tVAddr)Handle <= 256*16 )
279 // Remove QH from list
280 // - If it's a polling endpoint, need to remove from all periodic lists
283 EHCI_int_DeallocateQH(Ptr, Handle);
287 void *EHCI_SendControl(void *Ptr, void *Dest, tUSBHostCb Cb, void *CbData,
289 const void *SetupData, size_t SetupLength,
290 const void *OutData, size_t OutLength,
291 void *InData, size_t InLength
294 tEHCI_Controller *Cont = Ptr;
295 tEHCI_qTD *td_setup, *td_data, *td_status;
298 if( (tVAddr)Dest <= 256*16 )
301 // Check size of SETUP and status
304 td_setup = EHCI_int_AllocateTD(Cont, PID_SETUP, (void*)SetupData, SetupLength, NULL, NULL);
307 td_data = EHCI_int_AllocateTD(Cont, PID_OUT, (void*)OutData, OutLength, NULL, NULL);
308 td_status = EHCI_int_AllocateTD(Cont, PID_IN, InData, InLength, Cb, CbData);
312 td_data = EHCI_int_AllocateTD(Cont, PID_IN, InData, InLength, NULL, NULL);
313 td_status = EHCI_int_AllocateTD(Cont, PID_OUT, (void*)OutData, OutLength, Cb, CbData);
317 EHCI_int_AppendTD(Dest, td_setup);
318 EHCI_int_AppendTD(Dest, td_data);
319 EHCI_int_AppendTD(Dest, td_status);
324 void *EHCI_SendBulk(void *Ptr, void *Dest, tUSBHostCb Cb, void *CbData, int Dir, void *Data, size_t Length)
326 tEHCI_Controller *Cont = Ptr;
328 // Sanity check the pointer
329 // - Can't be NULL or an isoch
330 if( (tVAddr)Dest <= 256*16 )
333 // Allocate single TD
334 tEHCI_qTD *td = EHCI_int_AllocateTD(Cont, (Dir ? PID_OUT : PID_IN), Data, Length, Cb, CbData);
335 EHCI_int_AppendTD(Dest, td);
340 void EHCI_FreeOp(void *Ptr, void *Handle)
342 tEHCI_Controller *Cont = Ptr;
344 EHCI_int_DeallocateTD(Cont, Handle);
347 // --------------------------------------------------------------------
349 // --------------------------------------------------------------------
350 tEHCI_qTD *EHCI_int_AllocateTD(tEHCI_Controller *Cont, int PID, void *Data, size_t Length, tUSBHostCb Cb, void *CbData)
355 void EHCI_int_DeallocateTD(tEHCI_Controller *Cont, tEHCI_qTD *TD)
359 void EHCI_int_AppendTD(tEHCI_QH *QH, tEHCI_qTD *TD)
363 tEHCI_QH *EHCI_int_AllocateQH(tEHCI_Controller *Cont, int Endpoint, size_t MaxPacketSize)
368 void EHCI_int_DeallocateQH(tEHCI_Controller *Cont, tEHCI_QH *QH)