1 /* 2 * Copyright 2006-2012, Haiku Inc. All rights reserved. 3 * Distributed under the terms of the MIT License. 4 * 5 * Authors: 6 * Michael Lotz <mmlr@mlotz.ch> 7 * Jian Chiang <j.jian.chiang@gmail.com> 8 * Jérôme Duval <jerome.duval@gmail.com> 9 */ 10 #ifndef XHCI_H 11 #define XHCI_H 12 13 14 #include "usb_private.h" 15 #include "xhci_hardware.h" 16 17 18 struct pci_info; 19 struct pci_module_info; 20 struct pci_x86_module_info; 21 struct xhci_td; 22 struct xhci_device; 23 struct xhci_endpoint; 24 class XHCIRootHub; 25 26 27 enum xhci_state { 28 XHCI_STATE_DISABLED = 0, 29 XHCI_STATE_ENABLED, 30 XHCI_STATE_DEFAULT, 31 XHCI_STATE_ADDRESSED, 32 XHCI_STATE_CONFIGURED, 33 }; 34 35 36 typedef struct xhci_td { 37 struct xhci_trb trbs[XHCI_MAX_TRBS_PER_TD]; 38 39 phys_addr_t this_phy; // A physical pointer to this address 40 phys_addr_t buffer_phy[XHCI_MAX_TRBS_PER_TD]; 41 void *buffer_log[XHCI_MAX_TRBS_PER_TD]; // Pointer to the logical buffer 42 size_t buffer_size[XHCI_MAX_TRBS_PER_TD]; // Size of the buffer 43 uint8 buffer_count; 44 45 struct xhci_td *next_chain; 46 struct xhci_td *next; 47 Transfer *transfer; 48 uint8 trb_count; 49 uint8 trb_completion_code; 50 uint32 trb_left; 51 } xhci_td __attribute__((__aligned__(16))); 52 53 54 typedef struct xhci_endpoint { 55 xhci_device *device; 56 xhci_td *td_head; 57 struct xhci_trb *trbs; // [XHCI_MAX_TRANSFERS] 58 phys_addr_t trb_addr; 59 uint8 used; 60 uint8 current; 61 mutex lock; 62 } xhci_endpoint; 63 64 65 typedef struct xhci_device { 66 uint8 slot; 67 uint8 address; 68 enum xhci_state state; 69 area_id trb_area; 70 phys_addr_t trb_addr; 71 struct xhci_trb (*trbs); // [XHCI_MAX_ENDPOINTS - 1][XHCI_MAX_TRANSFERS] 72 73 area_id input_ctx_area; 74 phys_addr_t input_ctx_addr; 75 struct xhci_input_device_ctx *input_ctx; 76 77 area_id device_ctx_area; 78 phys_addr_t device_ctx_addr; 79 struct xhci_device_ctx *device_ctx; 80 81 xhci_endpoint endpoints[XHCI_MAX_ENDPOINTS - 1]; 82 } xhci_device; 83 84 85 class XHCI : public BusManager { 86 public: 87 XHCI(pci_info *info, Stack *stack); 88 ~XHCI(); 89 90 status_t Start(); 91 virtual status_t SubmitTransfer(Transfer *transfer); 92 status_t SubmitControlRequest(Transfer *transfer); 93 status_t SubmitNormalRequest(Transfer *transfer); 94 virtual status_t CancelQueuedTransfers(Pipe *pipe, bool force); 95 96 virtual status_t NotifyPipeChange(Pipe *pipe, 97 usb_change change); 98 99 static status_t AddTo(Stack *stack); 100 101 virtual Device * AllocateDevice(Hub *parent, 102 int8 hubAddress, uint8 hubPort, 103 usb_speed speed); 104 status_t ConfigureEndpoint(uint8 slot, uint8 number, 105 uint8 type, uint64 ringAddr, 106 uint16 interval, uint16 maxPacketSize, 107 uint16 maxFrameSize, usb_speed speed); 108 virtual void FreeDevice(Device *device); 109 110 status_t _InsertEndpointForPipe(Pipe *pipe); 111 status_t _RemoveEndpointForPipe(Pipe *pipe); 112 113 // Port operations for root hub 114 uint8 PortCount() const { return fPortCount; } 115 status_t GetPortStatus(uint8 index, 116 usb_port_status *status); 117 status_t SetPortFeature(uint8 index, uint16 feature); 118 status_t ClearPortFeature(uint8 index, uint16 feature); 119 120 status_t GetPortSpeed(uint8 index, usb_speed *speed); 121 122 virtual const char * TypeName() const { return "xhci"; } 123 124 private: 125 // Controller resets 126 status_t ControllerReset(); 127 status_t ControllerHalt(); 128 129 // Interrupt functions 130 static int32 InterruptHandler(void *data); 131 int32 Interrupt(); 132 133 // Event management 134 static int32 EventThread(void *data); 135 void CompleteEvents(); 136 137 // Transfer management 138 static int32 FinishThread(void *data); 139 void FinishTransfers(); 140 141 // Descriptor 142 xhci_td * CreateDescriptor(size_t bufferSize); 143 xhci_td * CreateDescriptorChain(size_t bufferSize, 144 int32 &trbCount); 145 void FreeDescriptor(xhci_td *descriptor); 146 147 size_t WriteDescriptorChain(xhci_td *descriptor, 148 iovec *vector, size_t vectorCount); 149 size_t ReadDescriptorChain(xhci_td *descriptor, 150 iovec *vector, size_t vectorCount); 151 152 status_t _LinkDescriptorForPipe(xhci_td *descriptor, 153 xhci_endpoint *endpoint); 154 status_t _UnlinkDescriptorForPipe(xhci_td *descriptor, 155 xhci_endpoint *endpoint); 156 157 // Command 158 void QueueCommand(xhci_trb *trb); 159 void HandleCmdComplete(xhci_trb *trb); 160 void HandleTransferComplete(xhci_trb *trb); 161 status_t DoCommand(xhci_trb *trb); 162 //Doorbell 163 void Ring(uint8 slot, uint8 endpoint); 164 165 // Commands 166 status_t Noop(); 167 status_t EnableSlot(uint8 *slot); 168 status_t DisableSlot(uint8 slot); 169 status_t SetAddress(uint64 inputContext, bool bsr, 170 uint8 slot); 171 status_t ConfigureEndpoint(uint64 inputContext, 172 bool deconfigure, uint8 slot); 173 status_t EvaluateContext(uint64 inputContext, 174 uint8 slot); 175 status_t ResetEndpoint(bool preserve, uint8 endpoint, 176 uint8 slot); 177 status_t StopEndpoint(bool suspend, uint8 endpoint, 178 uint8 slot); 179 status_t SetTRDequeue(uint64 dequeue, uint16 stream, 180 uint8 endpoint, uint8 slot); 181 status_t ResetDevice(uint8 slot); 182 183 // Operational register functions 184 inline void WriteOpReg(uint32 reg, uint32 value); 185 inline uint32 ReadOpReg(uint32 reg); 186 187 // Capability register functions 188 inline uint32 ReadCapReg32(uint32 reg); 189 inline void WriteCapReg32(uint32 reg, uint32 value); 190 191 // Runtime register functions 192 inline uint32 ReadRunReg32(uint32 reg); 193 inline void WriteRunReg32(uint32 reg, uint32 value); 194 195 // Doorbell register functions 196 inline uint32 ReadDoorReg32(uint32 reg); 197 inline void WriteDoorReg32(uint32 reg, uint32 value); 198 199 void _SwitchIntelPorts(); 200 201 static pci_module_info * sPCIModule; 202 static pci_x86_module_info *sPCIx86Module; 203 204 uint8 * fCapabilityRegisters; 205 uint32 fCapabilityLength; 206 uint8 * fOperationalRegisters; 207 uint32 fOperationalLength; 208 uint8 * fRuntimeRegisters; 209 uint32 fRuntimeLength; 210 uint8 * fDoorbellRegisters; 211 area_id fRegisterArea; 212 pci_info * fPCIInfo; 213 Stack * fStack; 214 uint8 fIRQ; 215 bool fUseMSI; 216 217 area_id fErstArea; 218 xhci_erst_element * fErst; 219 xhci_trb * fEventRing; 220 xhci_trb * fCmdRing; 221 uint64 fCmdAddr; 222 uint32 fCmdResult[2]; 223 224 area_id fDcbaArea; 225 struct xhci_device_context_array * fDcba; 226 227 spinlock fSpinlock; 228 229 sem_id fCmdCompSem; 230 sem_id fFinishTransfersSem; 231 thread_id fFinishThread; 232 bool fStopThreads; 233 234 xhci_td * fFinishedHead; 235 236 // Root Hub 237 XHCIRootHub * fRootHub; 238 uint8 fRootHubAddress; 239 240 // Port management 241 uint8 fPortCount; 242 uint8 fSlotCount; 243 usb_speed fPortSpeeds[XHCI_MAX_PORTS]; 244 uint8 fPortSlots[XHCI_MAX_PORTS]; 245 246 // Scratchpad 247 uint32 fScratchpadCount; 248 area_id fScratchpadArea[XHCI_MAX_SCRATCHPADS]; 249 void * fScratchpad[XHCI_MAX_SCRATCHPADS]; 250 251 // Devices 252 struct xhci_device fDevices[XHCI_MAX_DEVICES]; 253 254 sem_id fEventSem; 255 thread_id fEventThread; 256 uint16 fEventIdx; 257 uint16 fCmdIdx; 258 uint8 fEventCcs; 259 uint8 fCmdCcs; 260 261 uint32 fExitLatMax; 262 }; 263 264 265 class XHCIRootHub : public Hub { 266 public: 267 XHCIRootHub(Object *rootObject, 268 int8 deviceAddress); 269 270 static status_t ProcessTransfer(XHCI *ehci, 271 Transfer *transfer); 272 }; 273 274 275 #endif // !XHCI_H 276