Ad van der Weiden / Mbed 2 deprecated ftusbClass

class library to access fischertechnik interfaces via USB

Dependencies:   FatFileSystem mbed myBlueUSB neigbourhood rfcomm sdp

myUSBHost/USBHost.cpp@1:4676e8b9b357, 2013-03-11 (annotated)

Committer:
networker
Date:
Mon Mar 11 08:04:37 2013 +0000
Revision:
1:4676e8b9b357
Parent:
0:7da612835693 
first publication of this experimental class, just for sharing wip

Who changed what in which revision?

UserRevisionLine numberNew contents of line
networker 0:7da612835693 1
networker 0:7da612835693 2 /*
networker 0:7da612835693 3 Copyright (c) 2010 Peter Barrett
networker 0:7da612835693 4
networker 0:7da612835693 5 Permission is hereby granted, free of charge, to any person obtaining a copy
networker 0:7da612835693 6 of this software and associated documentation files (the "Software"), to deal
networker 0:7da612835693 7 in the Software without restriction, including without limitation the rights
networker 0:7da612835693 8 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
networker 0:7da612835693 9 copies of the Software, and to permit persons to whom the Software is
networker 0:7da612835693 10 furnished to do so, subject to the following conditions:
networker 0:7da612835693 11
networker 0:7da612835693 12 The above copyright notice and this permission notice shall be included in
networker 0:7da612835693 13 all copies or substantial portions of the Software.
networker 0:7da612835693 14
networker 0:7da612835693 15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
networker 0:7da612835693 16 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
networker 0:7da612835693 17 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
networker 0:7da612835693 18 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
networker 0:7da612835693 19 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
networker 0:7da612835693 20 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
networker 0:7da612835693 21 THE SOFTWARE.
networker 0:7da612835693 22 */
networker 0:7da612835693 23
networker 0:7da612835693 24 #include "mbed.h"
networker 0:7da612835693 25 #include "USBHost.h"
networker 0:7da612835693 26
networker 0:7da612835693 27 // Config (default uses x bytes)
networker 0:7da612835693 28 #define MAX_DEVICES 8 // Max number of devices
networker 0:7da612835693 29 #define MAX_ENDPOINTS_TOTAL 16 // Max number of endpoints total
networker 0:7da612835693 30 #define MAX_ENDPOINTS_PER_DEVICE 8 // Max number of endpoints for any one device
networker 0:7da612835693 31
networker 0:7da612835693 32 #define USBLOG 1
networker 0:7da612835693 33 #if USBLOG
networker 0:7da612835693 34 #define LOG(...) printf(__VA_ARGS__)
networker 0:7da612835693 35 #else
networker 0:7da612835693 36 #define LOG(...) do {} while(0)
networker 0:7da612835693 37 #endif
networker 0:7da612835693 38
networker 0:7da612835693 39 // USB host structures
networker 0:7da612835693 40
networker 0:7da612835693 41 #define USB_RAM_SIZE 16*1024 // AHB SRAM block 1 TODO MACHINE DEPENDENT
networker 0:7da612835693 42 #define USB_RAM_BASE 0x2007C000
networker 0:7da612835693 43
networker 0:7da612835693 44 #define TOKEN_SETUP 0
networker 0:7da612835693 45 #define TOKEN_IN 1
networker 0:7da612835693 46 #define TOKEN_OUT 2
networker 0:7da612835693 47
networker 0:7da612835693 48 // Status flags from hub
networker 0:7da612835693 49 #define PORT_CONNECTION 0
networker 0:7da612835693 50 #define PORT_ENABLE 1
networker 0:7da612835693 51 #define PORT_SUSPEND 2
networker 0:7da612835693 52 #define PORT_OVER_CURRENT 3
networker 0:7da612835693 53 #define PORT_RESET 4
networker 0:7da612835693 54 #define PORT_POWER 8
networker 0:7da612835693 55 #define PORT_LOW_SPEED 9
networker 0:7da612835693 56
networker 0:7da612835693 57 #define C_PORT_CONNECTION 16
networker 0:7da612835693 58 #define C_PORT_ENABLE 17
networker 0:7da612835693 59 #define C_PORT_SUSPEND 18
networker 0:7da612835693 60 #define C_PORT_OVER_CURRENT 19
networker 0:7da612835693 61 #define C_PORT_RESET 20
networker 0:7da612835693 62
networker 0:7da612835693 63 typedef struct {
networker 0:7da612835693 64 u8 bm_request_type;
networker 0:7da612835693 65 u8 b_request;
networker 0:7da612835693 66 u16 w_value;
networker 0:7da612835693 67 u16 w_index;
networker 0:7da612835693 68 u16 w_length;
networker 0:7da612835693 69 } Setup;
networker 0:7da612835693 70
networker 0:7da612835693 71
networker 0:7da612835693 72 // Hub stuff is kept private just to keep api simple
networker 0:7da612835693 73 int SetPortFeature(int device, int feature, int index);
networker 0:7da612835693 74 int ClearPortFeature(int device, int feature, int index);
networker 0:7da612835693 75 int SetPortPower(int device, int port);
networker 0:7da612835693 76 int SetPortReset(int device, int port);
networker 0:7da612835693 77 int GetPortStatus(int device, int port, u32* status);
networker 0:7da612835693 78
networker 0:7da612835693 79 //===================================================================
networker 0:7da612835693 80 //===================================================================
networker 0:7da612835693 81 // Hardware defines
networker 0:7da612835693 82
networker 0:7da612835693 83 // HcControl
networker 0:7da612835693 84 #define PeriodicListEnable 0x00000004
networker 0:7da612835693 85 #define IsochronousEnable 0x00000008
networker 0:7da612835693 86 #define ControlListEnable 0x00000010
networker 0:7da612835693 87 #define BulkListEnable 0x00000020
networker 0:7da612835693 88 #define OperationalMask 0x00000080
networker 0:7da612835693 89 #define HostControllerFunctionalState 0x000000C0
networker 0:7da612835693 90
networker 0:7da612835693 91 // HcCommandStatus
networker 0:7da612835693 92 #define HostControllerReset 0x00000001
networker 0:7da612835693 93 #define ControlListFilled 0x00000002
networker 0:7da612835693 94 #define BulkListFilled 0x00000004
networker 0:7da612835693 95
networker 0:7da612835693 96 // HcInterruptStatus Register
networker 0:7da612835693 97 #define WritebackDoneHead 0x00000002
networker 0:7da612835693 98 #define StartofFrame 0x00000004
networker 0:7da612835693 99 #define ResumeDetected 0x00000008
networker 0:7da612835693 100 #define UnrecoverableError 0x00000010
networker 0:7da612835693 101 #define FrameNumberOverflow 0x00000020
networker 0:7da612835693 102 #define RootHubStatusChange 0x00000040
networker 0:7da612835693 103 #define OwnershipChange 0x00000080
networker 0:7da612835693 104 #define MasterInterruptEnable 0x80000000
networker 0:7da612835693 105
networker 0:7da612835693 106 // HcRhStatus
networker 0:7da612835693 107 #define SetGlobalPower 0x00010000
networker 0:7da612835693 108 #define DeviceRemoteWakeupEnable 0x00008000
networker 0:7da612835693 109
networker 0:7da612835693 110 // HcRhPortStatus (hub 0, port 1)
networker 0:7da612835693 111 #define CurrentConnectStatus 0x00000001
networker 0:7da612835693 112 #define PortEnableStatus 0x00000002
networker 0:7da612835693 113 #define PortSuspendStatus 0x00000004
networker 0:7da612835693 114 #define PortOverCurrentIndicator 0x00000008
networker 0:7da612835693 115 #define PortResetStatus 0x00000010
networker 0:7da612835693 116
networker 0:7da612835693 117 #define PortPowerStatus 0x00000100
networker 0:7da612835693 118 #define LowspeedDevice 0x00000200
networker 0:7da612835693 119 #define HighspeedDevice 0x00000400
networker 0:7da612835693 120
networker 0:7da612835693 121 #define ConnectStatusChange (CurrentConnectStatus << 16)
networker 0:7da612835693 122 #define PortResetStatusChange (PortResetStatus << 16)
networker 0:7da612835693 123
networker 0:7da612835693 124
networker 0:7da612835693 125 #define TD_ROUNDING (u32)0x00040000
networker 0:7da612835693 126 #define TD_SETUP (u32)0x00000000
networker 0:7da612835693 127 #define TD_IN (u32)0x00100000
networker 0:7da612835693 128 #define TD_OUT (u32)0x00080000
networker 0:7da612835693 129 #define TD_DELAY_INT(x) (u32)((x) << 21)
networker 0:7da612835693 130 #define TD_TOGGLE_0 (u32)0x02000000
networker 0:7da612835693 131 #define TD_TOGGLE_1 (u32)0x03000000
networker 0:7da612835693 132 #define TD_CC (u32)0xF0000000
networker 0:7da612835693 133
networker 0:7da612835693 134 // HostController EndPoint Descriptor
networker 0:7da612835693 135 typedef struct {
networker 0:7da612835693 136 volatile u32 Control;
networker 0:7da612835693 137 volatile u32 TailTd;
networker 0:7da612835693 138 volatile u32 HeadTd;
networker 0:7da612835693 139 volatile u32 Next;
networker 0:7da612835693 140 } HCED;
networker 0:7da612835693 141
networker 0:7da612835693 142 // HostController Transfer Descriptor
networker 0:7da612835693 143 typedef struct {
networker 0:7da612835693 144 volatile u32 Control;
networker 0:7da612835693 145 volatile u32 CurrBufPtr;
networker 0:7da612835693 146 volatile u32 Next;
networker 0:7da612835693 147 volatile u32 BufEnd;
networker 0:7da612835693 148 } HCTD;
networker 0:7da612835693 149
networker 0:7da612835693 150 // Host Controller Communication Area
networker 0:7da612835693 151 typedef struct {
networker 0:7da612835693 152 volatile u32 InterruptTable[32];
networker 0:7da612835693 153 volatile u16 FrameNumber;
networker 0:7da612835693 154 volatile u16 FrameNumberPad;
networker 0:7da612835693 155 volatile u32 DoneHead;
networker 0:7da612835693 156 volatile u8 Reserved[120];
networker 0:7da612835693 157 } HCCA;
networker 0:7da612835693 158
networker 0:7da612835693 159 //====================================================================================
networker 0:7da612835693 160 //====================================================================================
networker 0:7da612835693 161
networker 0:7da612835693 162 class HostController;
networker 0:7da612835693 163 class Endpoint;
networker 0:7da612835693 164 class Device;
networker 0:7da612835693 165
networker 0:7da612835693 166 // must be 3*16 bytes long
networker 0:7da612835693 167 class Endpoint
networker 0:7da612835693 168 {
networker 0:7da612835693 169 public:
networker 0:7da612835693 170 HCED EndpointDescriptor; // Pointer to EndpointDescriptor == Pointer to Endpoint
networker 0:7da612835693 171 HCTD TDHead;
networker 0:7da612835693 172
networker 0:7da612835693 173 enum State
networker 0:7da612835693 174 {
networker 0:7da612835693 175 Free,
networker 0:7da612835693 176 NotQueued,
networker 0:7da612835693 177 Idle,
networker 0:7da612835693 178 SetupQueued,
networker 0:7da612835693 179 DataQueued,
networker 0:7da612835693 180 StatusQueued,
networker 0:7da612835693 181 CallbackPending
networker 0:7da612835693 182 };
networker 0:7da612835693 183
networker 0:7da612835693 184 volatile u8 CurrentState;
networker 0:7da612835693 185 u8 Flags; // 0x80 In, 0x03 mask endpoint type
networker 0:7da612835693 186
networker 0:7da612835693 187 u16 Length;
networker 0:7da612835693 188 u8* Data;
networker 0:7da612835693 189 USBCallback Callback; // Must be a multiple of 16 bytes long
networker 0:7da612835693 190 void* UserData;
networker 0:7da612835693 191
networker 0:7da612835693 192 int Address()
networker 0:7da612835693 193 {
networker 0:7da612835693 194 int ep = (EndpointDescriptor.Control >> 7) & 0xF;
networker 0:7da612835693 195 if (ep)
networker 0:7da612835693 196 ep |= Flags & 0x80;
networker 0:7da612835693 197 return ep;
networker 0:7da612835693 198 }
networker 0:7da612835693 199
networker 0:7da612835693 200 int Device()
networker 0:7da612835693 201 {
networker 0:7da612835693 202 return EndpointDescriptor.Control & 0x7F;
networker 0:7da612835693 203 }
networker 0:7da612835693 204
networker 0:7da612835693 205 int Status()
networker 0:7da612835693 206 {
networker 0:7da612835693 207 return (TDHead.Control >> 28) & 0xF;
networker 0:7da612835693 208 }
networker 0:7da612835693 209
networker 0:7da612835693 210 u32 Enqueue(u32 head)
networker 0:7da612835693 211 {
networker 0:7da612835693 212 if (CurrentState == NotQueued)
networker 0:7da612835693 213 {
networker 0:7da612835693 214 EndpointDescriptor.Next = head;
networker 0:7da612835693 215 head = (u32)&EndpointDescriptor;
networker 0:7da612835693 216 CurrentState = Idle;
networker 0:7da612835693 217 }
networker 0:7da612835693 218 return head;
networker 0:7da612835693 219 }
networker 0:7da612835693 220 };
networker 0:7da612835693 221
networker 0:7da612835693 222 class Device
networker 0:7da612835693 223 {
networker 0:7da612835693 224 public:
networker 0:7da612835693 225 u8 _endpointMap[MAX_ENDPOINTS_PER_DEVICE*2];
networker 0:7da612835693 226 u8 Hub;
networker 0:7da612835693 227 u8 Port;
networker 0:7da612835693 228 u8 Addr;
networker 0:7da612835693 229 u8 Pad;
networker 0:7da612835693 230
networker 0:7da612835693 231 // Only if this device is a hub
networker 0:7da612835693 232 u8 HubPortCount; // nonzero if this is a hub
networker 0:7da612835693 233 u8 HubInterruptData;
networker 0:7da612835693 234 u8 HubMap;
networker 0:7da612835693 235 u8 HubMask;
networker 0:7da612835693 236
networker 0:7da612835693 237 int Flags; // 1 = Disconnected
networker 0:7da612835693 238
networker 0:7da612835693 239 Setup SetupBuffer;
networker 0:7da612835693 240
networker 0:7da612835693 241 // Allocate endpoint zero
networker 0:7da612835693 242 int Init(DeviceDescriptor* d, int hub, int port, int addr, int lowSpeed)
networker 0:7da612835693 243 {
networker 0:7da612835693 244 Hub = hub;
networker 0:7da612835693 245 Port = port;
networker 0:7da612835693 246 Addr = addr;
networker 0:7da612835693 247 Flags = lowSpeed;
networker 0:7da612835693 248 memset(_endpointMap,0xFF,sizeof(_endpointMap));
networker 0:7da612835693 249 return 0;
networker 0:7da612835693 250 }
networker 0:7da612835693 251
networker 0:7da612835693 252 int SetEndpointIndex(int ep, int endpointIndex)
networker 0:7da612835693 253 {
networker 0:7da612835693 254 for (int i = 0; i < MAX_ENDPOINTS_PER_DEVICE*2; i += 2)
networker 0:7da612835693 255 {
networker 0:7da612835693 256 if (_endpointMap[i] == 0xFF) // Add endpoint to map
networker 0:7da612835693 257 {
networker 0:7da612835693 258 _endpointMap[i] = ep;
networker 0:7da612835693 259 _endpointMap[i+1] = endpointIndex;
networker 0:7da612835693 260 return 0;
networker 0:7da612835693 261 }
networker 0:7da612835693 262 }
networker 0:7da612835693 263 return ERR_ENDPOINT_NONE_LEFT;
networker 0:7da612835693 264 }
networker 0:7da612835693 265
networker 0:7da612835693 266 int GetEndpointIndex(int ep)
networker 0:7da612835693 267 {
networker 0:7da612835693 268 for (int i = 0; i < MAX_ENDPOINTS_PER_DEVICE*2; i += 2)
networker 0:7da612835693 269 {
networker 0:7da612835693 270 if (_endpointMap[i] == ep)
networker 0:7da612835693 271 return _endpointMap[i+1];
networker 0:7da612835693 272 if (_endpointMap[i] == 0xFF)
networker 0:7da612835693 273 break;
networker 0:7da612835693 274 }
networker 0:7da612835693 275 return -1;
networker 0:7da612835693 276 }
networker 0:7da612835693 277 };
networker 0:7da612835693 278
networker 0:7da612835693 279 class HostController
networker 0:7da612835693 280 {
networker 0:7da612835693 281 public:
networker 0:7da612835693 282 HCCA CommunicationArea;
networker 0:7da612835693 283 Endpoint Endpoints[MAX_ENDPOINTS_TOTAL]; // Multiple of 16
networker 0:7da612835693 284
networker 0:7da612835693 285 Endpoint EndpointZero; // For device enumeration
networker 0:7da612835693 286 HCTD _commonTail;
networker 0:7da612835693 287 Setup _setupZero;
networker 0:7da612835693 288
networker 0:7da612835693 289 Device Devices[MAX_DEVICES];
networker 0:7da612835693 290 u32 _frameNumber; // 32 bit ms counter
networker 0:7da612835693 291
networker 0:7da612835693 292 u8 _callbacksPending; // Endpoints with callbacks are pending, set from ISR via ProcessDoneQueue
networker 0:7da612835693 293 u8 _rootHubStatusChange; // Root hub status has changed, set from ISR
networker 0:7da612835693 294 u8 _unused0;
networker 0:7da612835693 295 u8 _unused1;
networker 0:7da612835693 296
networker 0:7da612835693 297 u8 _connectPending; // Reset has initiated a connect
networker 0:7da612835693 298 u8 _connectCountdown; // Number of ms left after reset before we can connect
networker 0:7da612835693 299 u8 _connectHub; // Will connect on this hub
networker 0:7da612835693 300 u8 _connectPort; // ... and this port
networker 0:7da612835693 301
networker 0:7da612835693 302 u8 SRAM[0]; // Start of free SRAM
networker 0:7da612835693 303
networker 0:7da612835693 304 void Loop()
networker 0:7da612835693 305 {
networker 0:7da612835693 306 u16 elapsed = CommunicationArea.FrameNumber - (u16)_frameNumber; // extend to 32 bits
networker 0:7da612835693 307 _frameNumber += elapsed;
networker 0:7da612835693 308
networker 0:7da612835693 309 // Do callbacks, if any
networker 0:7da612835693 310 while (_callbacksPending)
networker 0:7da612835693 311 {
networker 0:7da612835693 312 for (int i = 0; i < MAX_ENDPOINTS_TOTAL; i++)
networker 0:7da612835693 313 {
networker 0:7da612835693 314 Endpoint* endpoint = Endpoints + i;
networker 0:7da612835693 315 if (endpoint->CurrentState == Endpoint::CallbackPending)
networker 0:7da612835693 316 {
networker 0:7da612835693 317 _callbacksPending--;
networker 0:7da612835693 318 endpoint->CurrentState = Endpoint::Idle;
networker 0:7da612835693 319 endpoint->Callback(endpoint->Device(),endpoint->Address(),endpoint->Status(),endpoint->Data,endpoint->Length,endpoint->UserData);
networker 0:7da612835693 320 }
networker 0:7da612835693 321 }
networker 0:7da612835693 322 }
networker 0:7da612835693 323
networker 0:7da612835693 324 // Deal with changes on the root hub
networker 0:7da612835693 325 if (_rootHubStatusChange)
networker 0:7da612835693 326 {
networker 0:7da612835693 327 u32 status = LPC_USB->HcRhPortStatus1;
networker 0:7da612835693 328 _rootHubStatusChange = 0;
networker 0:7da612835693 329 if (status >> 16)
networker 0:7da612835693 330 {
networker 0:7da612835693 331 HubStatusChange(0,1,status);
networker 0:7da612835693 332 LPC_USB->HcRhPortStatus1 = status & 0xFFFF0000; // clear status changes
networker 0:7da612835693 333 }
networker 0:7da612835693 334 }
networker 0:7da612835693 335
networker 0:7da612835693 336 // Connect after reset timeout
networker 0:7da612835693 337 if (_connectCountdown)
networker 0:7da612835693 338 {
networker 0:7da612835693 339 if (elapsed >= _connectCountdown)
networker 0:7da612835693 340 {
networker 0:7da612835693 341 _connectCountdown = 0;
networker 0:7da612835693 342 Connect(_connectHub,_connectPort & 0x7F,_connectPort & 0x80);
networker 0:7da612835693 343 } else
networker 0:7da612835693 344 _connectCountdown -= elapsed;
networker 0:7da612835693 345 }
networker 0:7da612835693 346 }
networker 0:7da612835693 347
networker 0:7da612835693 348 // HubInterrupt - bitmap in dev->HubInterruptData
networker 0:7da612835693 349 void HubInterrupt(int device)
networker 0:7da612835693 350 {
networker 0:7da612835693 351 Device* dev = &Devices[device-1];
networker 0:7da612835693 352 for (int i = 0; i < dev->HubPortCount; i++)
networker 0:7da612835693 353 {
networker 0:7da612835693 354 int port = i+1;
networker 0:7da612835693 355 if (dev->HubInterruptData & (1 << port))
networker 0:7da612835693 356 {
networker 0:7da612835693 357 u32 status = 0;
networker 0:7da612835693 358 GetPortStatus(device,port,&status);
networker 0:7da612835693 359 if (status >> 16)
networker 0:7da612835693 360 {
networker 0:7da612835693 361 if (_connectPending && (status & ConnectStatusChange))
networker 0:7da612835693 362 continue; // Don't connect again until previous device has been added and addressed
networker 0:7da612835693 363
networker 0:7da612835693 364 HubStatusChange(device,port,status);
networker 0:7da612835693 365 if (status & ConnectStatusChange)
networker 0:7da612835693 366 ClearPortFeature(device,C_PORT_CONNECTION,port);
networker 0:7da612835693 367 if (status & PortResetStatusChange)
networker 0:7da612835693 368 ClearPortFeature(device,C_PORT_RESET,port);
networker 0:7da612835693 369 }
networker 0:7da612835693 370 }
networker 0:7da612835693 371 }
networker 0:7da612835693 372 }
networker 0:7da612835693 373
networker 0:7da612835693 374 static void HubInterruptCallback(int device, int endpoint, int status, u8* data, int len, void* userData)
networker 0:7da612835693 375 {
networker 0:7da612835693 376 HostController* controller = (HostController*)userData;
networker 0:7da612835693 377 if (status == 0)
networker 0:7da612835693 378 controller->HubInterrupt(device);
networker 0:7da612835693 379 USBInterruptTransfer(device,endpoint,data,1,HubInterruptCallback,userData);
networker 0:7da612835693 380 }
networker 0:7da612835693 381
networker 0:7da612835693 382 int InitHub(int device)
networker 0:7da612835693 383 {
networker 0:7da612835693 384 u8 buf[16];
networker 0:7da612835693 385 int r= USBControlTransfer(device,DEVICE_TO_HOST | REQUEST_TYPE_CLASS | RECIPIENT_DEVICE,GET_DESCRIPTOR,(DESCRIPTOR_TYPE_HUB << 8),0,buf,sizeof(buf));
networker 0:7da612835693 386 if (r < 0)
networker 0:7da612835693 387 return ERR_HUB_INIT_FAILED;
networker 0:7da612835693 388
networker 0:7da612835693 389 // turn on power on the hubs ports
networker 0:7da612835693 390 Device* dev = &Devices[device-1];
networker 0:7da612835693 391 int ports = buf[2];
networker 0:7da612835693 392 dev->HubPortCount = ports;
networker 0:7da612835693 393 for (int i = 0; i < ports; i++)
networker 0:7da612835693 394 SetPortPower(device,i+1);
networker 0:7da612835693 395
networker 0:7da612835693 396 // Enable hub change interrupts
networker 0:7da612835693 397 return USBInterruptTransfer(device,0x81,&dev->HubInterruptData,1,HubInterruptCallback,this);
networker 0:7da612835693 398 }
networker 0:7da612835693 399
networker 0:7da612835693 400 int AddEndpoint(int device, int ep, int attributes, int maxPacketSize, int interval)
networker 0:7da612835693 401 {
networker 0:7da612835693 402 LOG("AddEndpoint D:%02X A:%02X T:%02X P:%04X I:%02X\n",device,ep,attributes,maxPacketSize,interval);
networker 0:7da612835693 403 Device* dev = &Devices[device-1];
networker 0:7da612835693 404 Endpoint* endpoint = AllocateEndpoint(device,ep,attributes,maxPacketSize);
networker 0:7da612835693 405 if (!endpoint)
networker 0:7da612835693 406 return ERR_ENDPOINT_NONE_LEFT;
networker 0:7da612835693 407 dev->SetEndpointIndex(ep,endpoint - Endpoints);
networker 0:7da612835693 408 endpoint->EndpointDescriptor.Control |= dev->Flags; // Map in slow speed
networker 0:7da612835693 409 return 0; // TODO ed->bInterval
networker 0:7da612835693 410 }
networker 0:7da612835693 411
networker 0:7da612835693 412 int AddEndpoint(int device, EndpointDescriptor* ed)
networker 0:7da612835693 413 {
networker 0:7da612835693 414 return AddEndpoint(device,ed->bEndpointAddress,ed->bmAttributes,ed->wMaxPacketSize,ed->bInterval);
networker 0:7da612835693 415 }
networker 0:7da612835693 416
networker 0:7da612835693 417 // allocate a endpoint
networker 0:7da612835693 418 Endpoint* AllocateEndpoint(int device, int endpointAddress, int type, int maxPacketSize)
networker 0:7da612835693 419 {
networker 0:7da612835693 420 for (int i = 0; i < MAX_ENDPOINTS_TOTAL; i++)
networker 0:7da612835693 421 {
networker 0:7da612835693 422 Endpoint* ep = &Endpoints[i];
networker 0:7da612835693 423 if (ep->CurrentState == 0)
networker 0:7da612835693 424 {
networker 0:7da612835693 425 //LOG("Allocated endpoint %d to %02X:%02X\n",i,device,endpointAddress);
networker 0:7da612835693 426 ep->Flags = (endpointAddress & 0x80) | (type & 3);
networker 0:7da612835693 427 ep->CurrentState = Endpoint::NotQueued;
networker 0:7da612835693 428 ep->EndpointDescriptor.Control = (maxPacketSize << 16) | ((endpointAddress & 0x7F) << 7) | device;
networker 0:7da612835693 429 return ep;
networker 0:7da612835693 430 }
networker 0:7da612835693 431 }
networker 0:7da612835693 432 return 0;
networker 0:7da612835693 433 }
networker 0:7da612835693 434
networker 0:7da612835693 435 Endpoint* GetEndpoint(int device, int ep)
networker 0:7da612835693 436 {
networker 0:7da612835693 437 if (device == 0)
networker 0:7da612835693 438 {
networker 0:7da612835693 439 //printf("WARNING: USING DEVICE 0\n");
networker 0:7da612835693 440 return &EndpointZero;
networker 0:7da612835693 441 }
networker 0:7da612835693 442 if (device > MAX_DEVICES)
networker 0:7da612835693 443 return 0;
networker 0:7da612835693 444 int i = Devices[device-1].GetEndpointIndex(ep);
networker 0:7da612835693 445 if (i == -1)
networker 0:7da612835693 446 return 0;
networker 0:7da612835693 447 return Endpoints + i;
networker 0:7da612835693 448 }
networker 0:7da612835693 449
networker 0:7da612835693 450 int Transfer(Endpoint* endpoint, int token, u8* data, int len, int state)
networker 0:7da612835693 451 {
networker 0:7da612835693 452 //LOG("Transfer %02X T:%d Len:%d S:%d\n",endpoint->Address(),token,len,state);
networker 0:7da612835693 453
networker 0:7da612835693 454 int toggle = 0;
networker 0:7da612835693 455 if (endpoint->Address() == 0)
networker 0:7da612835693 456 toggle = (token == TOKEN_SETUP) ? TD_TOGGLE_0 : TD_TOGGLE_1;
networker 0:7da612835693 457
networker 0:7da612835693 458 if (token != TOKEN_SETUP)
networker 0:7da612835693 459 token = (token == TOKEN_IN ? TD_IN : TD_OUT);
networker 0:7da612835693 460
networker 0:7da612835693 461 HCTD* head = &endpoint->TDHead;
networker 0:7da612835693 462 HCTD* tail = &_commonTail;
networker 0:7da612835693 463
networker 0:7da612835693 464 head->Control = TD_ROUNDING | token | TD_DELAY_INT(0) | toggle | TD_CC;
networker 0:7da612835693 465 head->CurrBufPtr = (u32)data;
networker 0:7da612835693 466 head->BufEnd = (u32)(data + len - 1);
networker 0:7da612835693 467 head->Next = (u32)tail;
networker 0:7da612835693 468
networker 0:7da612835693 469 HCED* ed = &endpoint->EndpointDescriptor;
networker 0:7da612835693 470 ed->HeadTd = (u32)head | (ed->HeadTd & 0x00000002); // carry toggle
networker 0:7da612835693 471 ed->TailTd = (u32)tail;
networker 0:7da612835693 472
networker 0:7da612835693 473 //HCTD* td = head;
networker 0:7da612835693 474 //LOG("%04X TD %08X %08X %08X Next:%08X\n",CommunicationArea.FrameNumber,td->Control,td->CurrBufPtr,td->BufEnd,td->Next);
networker 0:7da612835693 475 //LOG("%04X ED %08X %08X %08X\n",CommunicationArea.FrameNumber,ed->Control,ed->HeadTd,ed->TailTd);
networker 0:7da612835693 476
networker 0:7da612835693 477 switch (endpoint->Flags & 3)
networker 0:7da612835693 478 {
networker 0:7da612835693 479 case ENDPOINT_CONTROL:
networker 0:7da612835693 480 LPC_USB->HcControlHeadED = endpoint->Enqueue(LPC_USB->HcControlHeadED); // May change state NotQueued->Idle
networker 0:7da612835693 481 endpoint->CurrentState = state; // Get in before an int
networker 0:7da612835693 482 LPC_USB->HcCommandStatus = LPC_USB->HcCommandStatus | ControlListFilled;
networker 0:7da612835693 483 LPC_USB->HcControl = LPC_USB->HcControl | ControlListEnable;
networker 0:7da612835693 484 break;
networker 0:7da612835693 485
networker 0:7da612835693 486 case ENDPOINT_BULK:
networker 0:7da612835693 487 LPC_USB->HcBulkHeadED = endpoint->Enqueue(LPC_USB->HcBulkHeadED);
networker 0:7da612835693 488 endpoint->CurrentState = state;
networker 0:7da612835693 489 LPC_USB->HcCommandStatus = LPC_USB->HcCommandStatus | BulkListFilled;
networker 0:7da612835693 490 LPC_USB->HcControl = LPC_USB->HcControl | BulkListEnable;
networker 0:7da612835693 491 break;
networker 0:7da612835693 492
networker 0:7da612835693 493 case ENDPOINT_INTERRUPT:
networker 0:7da612835693 494 CommunicationArea.InterruptTable[0] = endpoint->Enqueue(CommunicationArea.InterruptTable[0]);
networker 0:7da612835693 495 endpoint->CurrentState = state;
networker 0:7da612835693 496 LPC_USB->HcControl |= PeriodicListEnable;
networker 0:7da612835693 497 break;
networker 0:7da612835693 498 }
networker 0:7da612835693 499 return 0;
networker 0:7da612835693 500 }
networker 0:7da612835693 501
networker 0:7da612835693 502 // Remove an endpoint from an active queue
networker 0:7da612835693 503 bool Remove(HCED* ed, volatile HCED** queue)
networker 0:7da612835693 504 {
networker 0:7da612835693 505 if (*queue == 0)
networker 0:7da612835693 506 return false;
networker 0:7da612835693 507 if (*queue == (volatile HCED*)ed)
networker 0:7da612835693 508 {
networker 0:7da612835693 509 *queue = (volatile HCED*)ed->Next; // At head of queue
networker 0:7da612835693 510 return true;
networker 0:7da612835693 511 }
networker 0:7da612835693 512
networker 0:7da612835693 513 volatile HCED* head = *queue;
networker 0:7da612835693 514 while (head)
networker 0:7da612835693 515 {
networker 0:7da612835693 516 if (head->Next == (u32)ed)
networker 0:7da612835693 517 {
networker 0:7da612835693 518 head->Next = ed->Next;
networker 0:7da612835693 519 return true;
networker 0:7da612835693 520 }
networker 0:7da612835693 521 head = (volatile HCED*)head->Next;
networker 0:7da612835693 522 }
networker 0:7da612835693 523 return false;
networker 0:7da612835693 524 }
networker 0:7da612835693 525
networker 0:7da612835693 526 void Release(Endpoint* endpoint)
networker 0:7da612835693 527 {
networker 0:7da612835693 528 if (endpoint->CurrentState == Endpoint::NotQueued)
networker 0:7da612835693 529 {
networker 0:7da612835693 530 // Never event used it, nothing to do
networker 0:7da612835693 531 }
networker 0:7da612835693 532 else
networker 0:7da612835693 533 {
networker 0:7da612835693 534 HCED* ed = (HCED*)endpoint;
networker 0:7da612835693 535 ed->Control |= 0x4000; // SKIP
networker 0:7da612835693 536 switch (endpoint->Flags & 0x03)
networker 0:7da612835693 537 {
networker 0:7da612835693 538 case ENDPOINT_CONTROL:
networker 0:7da612835693 539 Remove(ed,(volatile HCED**)&LPC_USB->HcControlHeadED);
networker 0:7da612835693 540 break;
networker 0:7da612835693 541 case ENDPOINT_BULK:
networker 0:7da612835693 542 Remove(ed,(volatile HCED**)&LPC_USB->HcBulkHeadED);
networker 0:7da612835693 543 break;
networker 0:7da612835693 544 case ENDPOINT_INTERRUPT:
networker 0:7da612835693 545 for (int i = 0; i < 32; i++)
networker 0:7da612835693 546 Remove(ed,(volatile HCED**)&CommunicationArea.InterruptTable[i]);
networker 0:7da612835693 547 break;
networker 0:7da612835693 548 }
networker 0:7da612835693 549
networker 0:7da612835693 550 u16 fn = CommunicationArea.FrameNumber;
networker 0:7da612835693 551 while (fn == CommunicationArea.FrameNumber)
networker 0:7da612835693 552 ; // Wait for next frame
networker 0:7da612835693 553
networker 0:7da612835693 554 }
networker 0:7da612835693 555
networker 0:7da612835693 556 // In theory, the endpoint is now dead.
networker 0:7da612835693 557 // TODO: Will Callbacks ever be pending? BUGBUG
networker 0:7da612835693 558 memset(endpoint,0,sizeof(Endpoint));
networker 0:7da612835693 559 }
networker 0:7da612835693 560
networker 0:7da612835693 561 // Pop the last TD from the list
networker 0:7da612835693 562 HCTD* Reverse(HCTD* current)
networker 0:7da612835693 563 {
networker 0:7da612835693 564 HCTD *result = NULL,*temp;
networker 0:7da612835693 565 while (current)
networker 0:7da612835693 566 {
networker 0:7da612835693 567 temp = (HCTD*)current->Next;
networker 0:7da612835693 568 current->Next = (u32)result;
networker 0:7da612835693 569 result = current;
networker 0:7da612835693 570 current = temp;
networker 0:7da612835693 571 }
networker 0:7da612835693 572 return result;
networker 0:7da612835693 573 }
networker 0:7da612835693 574
networker 0:7da612835693 575 // Called from interrupt...
networker 0:7da612835693 576 // Control endpoints use a state machine to progress through the transfers
networker 0:7da612835693 577 void ProcessDoneQueue(u32 tdList)
networker 0:7da612835693 578 {
networker 0:7da612835693 579 HCTD* list = Reverse((HCTD*)tdList);
networker 0:7da612835693 580 while (list)
networker 0:7da612835693 581 {
networker 0:7da612835693 582 Endpoint* endpoint = (Endpoint*)(list-1);
networker 0:7da612835693 583 list = (HCTD*)list->Next;
networker 0:7da612835693 584 int ep = endpoint->Address();
networker 0:7da612835693 585 bool in = endpoint->Flags & 0x80;
networker 0:7da612835693 586 int status = (endpoint->TDHead.Control >> 28) & 0xF;
networker 0:7da612835693 587
networker 0:7da612835693 588 //LOG("ProcessDoneQueue %02X %08X\n",ep,endpoint->TDHead.Control);
networker 0:7da612835693 589
networker 0:7da612835693 590 if (status != 0)
networker 0:7da612835693 591 {
networker 0:7da612835693 592 LOG("ProcessDoneQueue status %02X %d\n",ep,status);
networker 0:7da612835693 593 endpoint->CurrentState = Endpoint::Idle;
networker 0:7da612835693 594 } else {
networker 0:7da612835693 595 switch (endpoint->CurrentState)
networker 0:7da612835693 596 {
networker 0:7da612835693 597 case Endpoint::SetupQueued:
networker 0:7da612835693 598 if (endpoint->Length == 0)
networker 0:7da612835693 599 Transfer(endpoint,in ? TOKEN_OUT : TOKEN_IN,0,0,Endpoint::StatusQueued); // Skip Data Phase
networker 0:7da612835693 600 else
networker 0:7da612835693 601 Transfer(endpoint,in ? TOKEN_IN : TOKEN_OUT,endpoint->Data,endpoint->Length, Endpoint::DataQueued); // Setup is done, now Data
networker 0:7da612835693 602 break;
networker 0:7da612835693 603
networker 0:7da612835693 604 case Endpoint::DataQueued:
networker 0:7da612835693 605 if (endpoint->TDHead.CurrBufPtr)
networker 0:7da612835693 606 endpoint->Length = endpoint->TDHead.CurrBufPtr - (u32)endpoint->Data;
networker 0:7da612835693 607
networker 0:7da612835693 608 if (ep == 0)
networker 0:7da612835693 609 Transfer(endpoint,in ? TOKEN_OUT : TOKEN_IN,0,0,Endpoint::StatusQueued); // Data is done, now Status, Control only
networker 0:7da612835693 610 else
networker 0:7da612835693 611 endpoint->CurrentState = Endpoint::Idle;
networker 0:7da612835693 612 break;
networker 0:7da612835693 613
networker 0:7da612835693 614 case Endpoint::StatusQueued: // Transaction is done
networker 0:7da612835693 615 endpoint->CurrentState = Endpoint::Idle;
networker 0:7da612835693 616 break;
networker 0:7da612835693 617 }
networker 0:7da612835693 618 }
networker 0:7da612835693 619
networker 0:7da612835693 620 // Complete, flag if we need a callback
networker 0:7da612835693 621 if (endpoint->Callback && endpoint->CurrentState == Endpoint::Idle)
networker 0:7da612835693 622 {
networker 0:7da612835693 623 endpoint->CurrentState = Endpoint::CallbackPending;
networker 0:7da612835693 624 _callbacksPending++;
networker 0:7da612835693 625 }
networker 0:7da612835693 626 }
networker 0:7da612835693 627 }
networker 0:7da612835693 628
networker 0:7da612835693 629 // Hack to reset devices that don't want to connect
networker 0:7da612835693 630 int AddDevice(int hub, int port, bool isLowSpeed)
networker 0:7da612835693 631 {
networker 0:7da612835693 632 int device = AddDeviceCore(hub,port,isLowSpeed);
networker 0:7da612835693 633 if (device < 0)
networker 0:7da612835693 634 {
networker 0:7da612835693 635 LOG("========RETRY ADD DEVICE========\n"); // This will go for ever.. TODO power cycle root?
networker 0:7da612835693 636 Disconnect(hub,port); // Could not read descriptor at assigned address, reset this port and try again
networker 0:7da612835693 637 ResetPort(hub,port); // Cheap bluetooth dongles often need this on a hotplug
networker 0:7da612835693 638 return -1;
networker 0:7da612835693 639 }
networker 0:7da612835693 640 return device;
networker 0:7da612835693 641 }
networker 0:7da612835693 642
networker 0:7da612835693 643 int AddDeviceCore(int hub, int port, bool isLowSpeed)
networker 0:7da612835693 644 {
networker 0:7da612835693 645 int lowSpeed = isLowSpeed ? 0x2000 : 0;
networker 0:7da612835693 646 DeviceDescriptor desc;
networker 0:7da612835693 647 EndpointZero.EndpointDescriptor.Control = (8 << 16) | lowSpeed; // MaxPacketSize == 8
networker 0:7da612835693 648 int r = GetDescriptor(0,DESCRIPTOR_TYPE_DEVICE,0,(u8*)&desc,8);
networker 0:7da612835693 649 if (r < 0)
networker 0:7da612835693 650 {
networker 0:7da612835693 651 LOG("FAILED TO LOAD DESCRIPTOR FOR DEVICE 0\n");
networker 0:7da612835693 652 return r;
networker 0:7da612835693 653 }
networker 0:7da612835693 654
networker 0:7da612835693 655 EndpointZero.EndpointDescriptor.Control = (desc.bMaxPacketSize << 16) | lowSpeed; // Actual MaxPacketSize
networker 0:7da612835693 656 r = GetDescriptor(0,DESCRIPTOR_TYPE_DEVICE,0,(u8*)&desc,sizeof(desc));
networker 0:7da612835693 657 if (r < 0)
networker 0:7da612835693 658 return r;
networker 0:7da612835693 659
networker 0:7da612835693 660 LOG("\nClass %02X found %04X:%04X\n\n",desc.bDeviceClass,desc.idVendor,desc.idProduct);
networker 0:7da612835693 661
networker 0:7da612835693 662 // Now assign the device an address, move off EndpointZero
networker 0:7da612835693 663 int device = 0;
networker 0:7da612835693 664 for (int i = 0; i < MAX_DEVICES; i++)
networker 0:7da612835693 665 {
networker 0:7da612835693 666 if (Devices[i].Port == 0)
networker 0:7da612835693 667 {
networker 0:7da612835693 668 device = i+1;
networker 0:7da612835693 669 break;
networker 0:7da612835693 670 }
networker 0:7da612835693 671 }
networker 0:7da612835693 672 if (!device)
networker 0:7da612835693 673 return ERR_DEVICE_NONE_LEFT;
networker 0:7da612835693 674
networker 0:7da612835693 675 r = SetAddress(0,device);
networker 0:7da612835693 676 if (r)
networker 0:7da612835693 677 return r;
networker 0:7da612835693 678 DelayMS(2);
networker 0:7da612835693 679
networker 0:7da612835693 680 // Now at a nonzero address, create control endpoint
networker 0:7da612835693 681 Device* dev = &Devices[device-1];
networker 0:7da612835693 682 dev->Init(&desc,hub,port,device,lowSpeed);
networker 0:7da612835693 683 AddEndpoint(device,0,ENDPOINT_CONTROL,desc.bMaxPacketSize,0);
networker 0:7da612835693 684 _connectPending = 0;
networker 0:7da612835693 685
networker 0:7da612835693 686 // Verify this all works
networker 0:7da612835693 687 r = GetDescriptor(device,DESCRIPTOR_TYPE_DEVICE,0,(u8*)&desc,sizeof(desc));
networker 0:7da612835693 688 if (r < 0)
networker 0:7da612835693 689 return r;
networker 0:7da612835693 690
networker 0:7da612835693 691 // Set to interface 0 by default
networker 0:7da612835693 692 // Calls LoadDevice if interface is found
networker 0:7da612835693 693 r = SetConfigurationAndInterface(device,1,0,&desc);
networker 0:7da612835693 694
networker 0:7da612835693 695 if (desc.bDeviceClass == CLASS_HUB)
networker 0:7da612835693 696 InitHub(device); // Handle hubs in this code
networker 0:7da612835693 697
networker 0:7da612835693 698 return device;
networker 0:7da612835693 699 }
networker 0:7da612835693 700
networker 0:7da612835693 701 // Walk descriptors and create endpoints for a given device
networker 0:7da612835693 702 // TODO configuration !=1, alternate settings etc.
networker 0:7da612835693 703 int SetConfigurationAndInterface(int device, int configuration, int interfaceNumber, DeviceDescriptor* desc)
networker 0:7da612835693 704 {
networker 0:7da612835693 705 u8 buffer[255];
networker 0:7da612835693 706 int err = GetDescriptor(device,DESCRIPTOR_TYPE_CONFIGURATION,0,buffer,sizeof(buffer));
networker 0:7da612835693 707 if (err < 0)
networker 0:7da612835693 708 return err;
networker 0:7da612835693 709
networker 0:7da612835693 710 err = SetConfiguration(device,configuration);
networker 0:7da612835693 711 if (err < 0)
networker 0:7da612835693 712 return err;
networker 0:7da612835693 713
networker 0:7da612835693 714 // Add the endpoints for this interface
networker 0:7da612835693 715 int len = buffer[2] | (buffer[3] << 8);
networker 0:7da612835693 716 u8* d = buffer;
networker 0:7da612835693 717 u8* end = d + len;
networker 0:7da612835693 718 InterfaceDescriptor* found = 0;
networker 0:7da612835693 719 // for (int i = 0; i < len; i++) printf(" %02X ", *(d+i)); printf("\n");
networker 0:7da612835693 720 while (d < end)
networker 0:7da612835693 721 {
networker 0:7da612835693 722 if (d[1] == DESCRIPTOR_TYPE_INTERFACE)
networker 0:7da612835693 723 {
networker 0:7da612835693 724 InterfaceDescriptor* id = (InterfaceDescriptor*)d;
networker 0:7da612835693 725 if (id->bInterfaceNumber == interfaceNumber)
networker 0:7da612835693 726 {
networker 0:7da612835693 727 found = id;
networker 0:7da612835693 728 d += d[0];
networker 0:7da612835693 729 while (d < end && d[1] != DESCRIPTOR_TYPE_CONFIGURATION)//changed by AvdW: was INTERFACE
networker 0:7da612835693 730 {
networker 0:7da612835693 731 switch (d[1])
networker 0:7da612835693 732 {
networker 0:7da612835693 733 case DESCRIPTOR_TYPE_ENDPOINT:
networker 0:7da612835693 734 AddEndpoint(device,(EndpointDescriptor*)d);
networker 0:7da612835693 735 break;
networker 0:7da612835693 736 case DESCRIPTOR_TYPE_INTERFACE:
networker 0:7da612835693 737 LOG("Parsing interface %d descriptor (%d bytes)\n",d[2],d[0]);
networker 0:7da612835693 738 break;
networker 0:7da612835693 739 default:
networker 0:7da612835693 740 LOG("Skipping descriptor %02X (%d bytes)\n",d[1],d[0]);
networker 0:7da612835693 741 }
networker 0:7da612835693 742 d += d[0];
networker 0:7da612835693 743 }
networker 0:7da612835693 744 }
networker 0:7da612835693 745 }
networker 0:7da612835693 746 d += d[0];
networker 0:7da612835693 747 }
networker 0:7da612835693 748
networker 0:7da612835693 749 if (!found)
networker 0:7da612835693 750 return ERR_INTERFACE_NOT_FOUND;
networker 0:7da612835693 751 OnLoadDevice(device,desc,found);
networker 0:7da612835693 752 return 0;
networker 0:7da612835693 753 }
networker 0:7da612835693 754
networker 0:7da612835693 755 void Init()
networker 0:7da612835693 756 {
networker 0:7da612835693 757 LOG("USB INIT (Controller is %d bytes)\n",sizeof(*this));
networker 0:7da612835693 758 memset(this,0,sizeof(HostController));
networker 0:7da612835693 759 EndpointZero.CurrentState = Endpoint::NotQueued;
networker 0:7da612835693 760 HWInit(&CommunicationArea);
networker 0:7da612835693 761 DelayMS(10);
networker 0:7da612835693 762 }
networker 0:7da612835693 763
networker 0:7da612835693 764 void ResetPort(int hub, int port)
networker 0:7da612835693 765 {
networker 0:7da612835693 766 LOG("ResetPort Hub:%d Port:%d\n",hub,port);
networker 0:7da612835693 767 _connectPending++; // Only reset/add 1 device at a time
networker 0:7da612835693 768 if (hub == 0)
networker 0:7da612835693 769 LPC_USB->HcRhPortStatus1 = PortResetStatus; // Reset Root Hub, port 1
networker 0:7da612835693 770 else
networker 0:7da612835693 771 SetPortReset(hub,port); // or reset other hub
networker 0:7da612835693 772 }
networker 0:7da612835693 773
networker 0:7da612835693 774 void Disconnect(int hub, int port)
networker 0:7da612835693 775 {
networker 0:7da612835693 776 LOG("Disconnect Hub:%d Port:%d\n",hub,port); // Mark a device for destruction
networker 0:7da612835693 777 for (int i = 0; i < MAX_DEVICES; i++)
networker 0:7da612835693 778 {
networker 0:7da612835693 779 Device* dev = Devices + i;
networker 0:7da612835693 780 if (dev->Port == port && dev->Hub == hub)
networker 0:7da612835693 781 {
networker 0:7da612835693 782 // Disconnect everything that is attached to this device if it is a hub
networker 0:7da612835693 783 for (int p = 0; p < dev->HubPortCount; p++)
networker 0:7da612835693 784 Disconnect(i+1,p+1);
networker 0:7da612835693 785
networker 0:7da612835693 786 // Now release endpoints
networker 0:7da612835693 787 for (int j = 1; j < MAX_ENDPOINTS_PER_DEVICE*2; j += 2)
networker 0:7da612835693 788 {
networker 0:7da612835693 789 u8 endpointIndex = dev->_endpointMap[j];
networker 0:7da612835693 790 if (endpointIndex != 0xFF)
networker 0:7da612835693 791 Release(Endpoints + endpointIndex);
networker 0:7da612835693 792 }
networker 0:7da612835693 793 dev->Port = 0; // Device is now free
networker 0:7da612835693 794 dev->Flags = 0;
networker 0:7da612835693 795 return;
networker 0:7da612835693 796 }
networker 0:7da612835693 797 }
networker 0:7da612835693 798 }
networker 0:7da612835693 799
networker 0:7da612835693 800 // called after reset
networker 0:7da612835693 801 void Connect(int hub, int port, bool lowspeed)
networker 0:7da612835693 802 {
networker 0:7da612835693 803 LOG("Connect Hub:%d Port:%d %s\n",hub,port,lowspeed ? "slow" : "full");
networker 0:7da612835693 804 AddDevice(hub,port,lowspeed);
networker 0:7da612835693 805 }
networker 0:7da612835693 806
networker 0:7da612835693 807 // Called from interrupt
networker 0:7da612835693 808 void HubStatusChange(int hub, int port, u32 status)
networker 0:7da612835693 809 {
networker 0:7da612835693 810 LOG("HubStatusChange Hub:%d Port:%d %08X\n",hub,port,status);
networker 0:7da612835693 811 if (status & ConnectStatusChange)
networker 0:7da612835693 812 {
networker 0:7da612835693 813 if (status & CurrentConnectStatus) // Connecting
networker 0:7da612835693 814 ResetPort(hub,port); // Reset to initiate connect (state machine?)
networker 0:7da612835693 815 else
networker 0:7da612835693 816 Disconnect(hub,port);
networker 0:7da612835693 817 }
networker 0:7da612835693 818
networker 0:7da612835693 819 if (status & PortResetStatusChange)
networker 0:7da612835693 820 {
networker 0:7da612835693 821 if (!(status & PortResetStatus))
networker 0:7da612835693 822 {
networker 0:7da612835693 823 _connectCountdown = 200; // Schedule a connection in 200ms
networker 0:7da612835693 824 if (status & LowspeedDevice)
networker 0:7da612835693 825 port |= 0x80;
networker 0:7da612835693 826 _connectHub = hub;
networker 0:7da612835693 827 _connectPort = port;
networker 0:7da612835693 828 }
networker 0:7da612835693 829 }
networker 0:7da612835693 830 }
networker 0:7da612835693 831
networker 0:7da612835693 832 #define HOST_CLK_EN (1<<0)
networker 0:7da612835693 833 #define PORTSEL_CLK_EN (1<<3)
networker 0:7da612835693 834 #define AHB_CLK_EN (1<<4)
networker 0:7da612835693 835 #define CLOCK_MASK (HOST_CLK_EN | PORTSEL_CLK_EN | AHB_CLK_EN)
networker 0:7da612835693 836
networker 0:7da612835693 837 #define FRAMEINTERVAL (12000-1) // 1ms
networker 0:7da612835693 838 #define DEFAULT_FMINTERVAL ((((6 * (FRAMEINTERVAL - 210)) / 7) << 16) | FRAMEINTERVAL)
networker 0:7da612835693 839
networker 0:7da612835693 840 void DelayMS(int ms)
networker 0:7da612835693 841 {
networker 0:7da612835693 842 u16 f = ms + CommunicationArea.FrameNumber;
networker 0:7da612835693 843 while (f != CommunicationArea.FrameNumber)
networker 0:7da612835693 844 ;
networker 0:7da612835693 845 }
networker 0:7da612835693 846
networker 0:7da612835693 847 static void HWInit(HCCA* cca)
networker 0:7da612835693 848 {
networker 0:7da612835693 849 NVIC_DisableIRQ(USB_IRQn);
networker 0:7da612835693 850
networker 0:7da612835693 851 // turn on power for USB
networker 0:7da612835693 852 LPC_SC->PCONP |= (1UL<<31);
networker 0:7da612835693 853 // Enable USB host clock, port selection and AHB clock
networker 0:7da612835693 854 LPC_USB->USBClkCtrl |= CLOCK_MASK;
networker 0:7da612835693 855 // Wait for clocks to become available
networker 0:7da612835693 856 while ((LPC_USB->USBClkSt & CLOCK_MASK) != CLOCK_MASK)
networker 0:7da612835693 857 ;
networker 0:7da612835693 858
networker 0:7da612835693 859 // We are a Host
networker 0:7da612835693 860 LPC_USB->OTGStCtrl |= 1;
networker 0:7da612835693 861 LPC_USB->USBClkCtrl &= ~PORTSEL_CLK_EN; // we don't need port selection clock until we do OTG
networker 0:7da612835693 862
networker 0:7da612835693 863 // configure USB pins
networker 0:7da612835693 864 LPC_PINCON->PINSEL1 &= ~((3<<26)|(3<<28));
networker 0:7da612835693 865 LPC_PINCON->PINSEL1 |= ((1<<26)|(1<<28)); // USB D+/D-
networker 0:7da612835693 866
networker 0:7da612835693 867 LPC_PINCON->PINSEL3 &= ~((3 << 6) | (3 << 22)); // USB_PPWR, USB_OVRCR
networker 0:7da612835693 868 LPC_PINCON->PINSEL3 |= ((2 << 6) | (2 << 22));
networker 0:7da612835693 869
networker 0:7da612835693 870 LPC_PINCON->PINSEL4 &= ~(3 << 18); // USB_CONNECT
networker 0:7da612835693 871 LPC_PINCON->PINSEL4 |= (1 << 18);
networker 0:7da612835693 872
networker 0:7da612835693 873 // Reset OHCI block
networker 0:7da612835693 874 LPC_USB->HcControl = 0;
networker 0:7da612835693 875 LPC_USB->HcControlHeadED = 0;
networker 0:7da612835693 876 LPC_USB->HcBulkHeadED = 0;
networker 0:7da612835693 877
networker 0:7da612835693 878 LPC_USB->HcCommandStatus = HostControllerReset;
networker 0:7da612835693 879 LPC_USB->HcFmInterval = DEFAULT_FMINTERVAL;
networker 0:7da612835693 880 LPC_USB->HcPeriodicStart = FRAMEINTERVAL*90/100;
networker 0:7da612835693 881
networker 0:7da612835693 882 LPC_USB->HcControl = (LPC_USB->HcControl & (~HostControllerFunctionalState)) | OperationalMask;
networker 0:7da612835693 883 LPC_USB->HcRhStatus = SetGlobalPower;
networker 0:7da612835693 884
networker 0:7da612835693 885 LPC_USB->HcHCCA = (u32)cca;
networker 0:7da612835693 886 LPC_USB->HcInterruptStatus |= LPC_USB->HcInterruptStatus;
networker 0:7da612835693 887 LPC_USB->HcInterruptEnable = MasterInterruptEnable | WritebackDoneHead | RootHubStatusChange | FrameNumberOverflow;
networker 0:7da612835693 888
networker 0:7da612835693 889 NVIC_SetPriority(USB_IRQn, 0);
networker 0:7da612835693 890 NVIC_EnableIRQ(USB_IRQn);
networker 0:7da612835693 891 while (cca->FrameNumber < 10)
networker 0:7da612835693 892 ; // 10ms delay before diving in
networker 0:7da612835693 893 }
networker 0:7da612835693 894 };
networker 0:7da612835693 895
networker 0:7da612835693 896 //====================================================================================
networker 0:7da612835693 897 //====================================================================================
networker 0:7da612835693 898 // Host controller instance and Interrupt handler
networker 0:7da612835693 899
networker 0:7da612835693 900 static HostController _controller __attribute__((at(USB_RAM_BASE)));
networker 0:7da612835693 901
networker 0:7da612835693 902 extern "C" void USB_IRQHandler(void) __irq;
networker 0:7da612835693 903 void USB_IRQHandler (void) __irq
networker 0:7da612835693 904 {
networker 0:7da612835693 905 u32 int_status = LPC_USB->HcInterruptStatus;
networker 0:7da612835693 906
networker 0:7da612835693 907 if (int_status & RootHubStatusChange) // Root hub status change
networker 0:7da612835693 908 _controller._rootHubStatusChange++; // Just flag the controller, will be processed in USBLoop
networker 0:7da612835693 909
networker 0:7da612835693 910 u32 head = 0;
networker 0:7da612835693 911 if (int_status & WritebackDoneHead)
networker 0:7da612835693 912 {
networker 0:7da612835693 913 head = _controller.CommunicationArea.DoneHead; // Writeback Done
networker 0:7da612835693 914 _controller.CommunicationArea.DoneHead = 0;
networker 0:7da612835693 915 }
networker 0:7da612835693 916 LPC_USB->HcInterruptStatus = int_status;
networker 0:7da612835693 917
networker 0:7da612835693 918 if (head)
networker 0:7da612835693 919 _controller.ProcessDoneQueue(head); // TODO - low bit can be set BUGBUG
networker 0:7da612835693 920 }
networker 0:7da612835693 921
networker 0:7da612835693 922 //====================================================================================
networker 0:7da612835693 923 //====================================================================================
networker 0:7da612835693 924 // API Methods
networker 0:7da612835693 925
networker 0:7da612835693 926 void USBInit()
networker 0:7da612835693 927 {
networker 0:7da612835693 928 return _controller.Init();
networker 0:7da612835693 929 }
networker 0:7da612835693 930
networker 0:7da612835693 931 void USBLoop()
networker 0:7da612835693 932 {
networker 0:7da612835693 933 return _controller.Loop();
networker 0:7da612835693 934 }
networker 0:7da612835693 935
networker 0:7da612835693 936 u8* USBGetBuffer(u32* len)
networker 0:7da612835693 937 {
networker 0:7da612835693 938 *len = USB_RAM_SIZE - sizeof(HostController);
networker 0:7da612835693 939 return _controller.SRAM;
networker 0:7da612835693 940 }
networker 0:7da612835693 941
networker 0:7da612835693 942 static Setup* GetSetup(int device)
networker 0:7da612835693 943 {
networker 0:7da612835693 944 if (device == 0)
networker 0:7da612835693 945 return &_controller._setupZero;
networker 0:7da612835693 946
networker 0:7da612835693 947 if (device < 1 || device > MAX_DEVICES)
networker 0:7da612835693 948 return 0;
networker 0:7da612835693 949 return &_controller.Devices[device-1].SetupBuffer;
networker 0:7da612835693 950 }
networker 0:7da612835693 951
networker 0:7da612835693 952 // Loop until IO on endpoint is complete
networker 0:7da612835693 953 static int WaitIODone(Endpoint* endpoint)
networker 0:7da612835693 954 {
networker 0:7da612835693 955 if (endpoint->CurrentState == Endpoint::NotQueued)
networker 0:7da612835693 956 return 0;
networker 0:7da612835693 957 while (endpoint->CurrentState != Endpoint::Idle)
networker 0:7da612835693 958 USBLoop(); // May generate callbacks, mount or unmount devices etc
networker 0:7da612835693 959 int status = endpoint->Status();
networker 0:7da612835693 960 if (status == 0)
networker 0:7da612835693 961 return endpoint->Length;
networker 0:7da612835693 962 return -status;
networker 0:7da612835693 963 }
networker 0:7da612835693 964
networker 0:7da612835693 965 int USBTransfer(int device, int ep, u8 flags, u8* data, int length, USBCallback callback, void* userData)
networker 0:7da612835693 966 {
networker 0:7da612835693 967 Endpoint* endpoint = _controller.GetEndpoint(device,ep);
networker 0:7da612835693 968 if (!endpoint)
networker 0:7da612835693 969 return ERR_ENDPOINT_NOT_FOUND;
networker 0:7da612835693 970
networker 0:7da612835693 971 WaitIODone(endpoint);
networker 0:7da612835693 972 endpoint->Flags = flags;
networker 0:7da612835693 973 endpoint->Data = data;
networker 0:7da612835693 974 endpoint->Length = length;
networker 0:7da612835693 975 endpoint->Callback = callback;
networker 0:7da612835693 976 endpoint->UserData = userData;
networker 0:7da612835693 977 if (ep == 0)
networker 0:7da612835693 978 _controller.Transfer(endpoint,TOKEN_SETUP,(u8*)GetSetup(device),8,Endpoint::SetupQueued);
networker 0:7da612835693 979 else
networker 0:7da612835693 980 _controller.Transfer(endpoint,flags & 0x80 ? TOKEN_IN : TOKEN_OUT,data,length,Endpoint::DataQueued);
networker 0:7da612835693 981 if (callback)
networker 0:7da612835693 982 return IO_PENDING;
networker 0:7da612835693 983 return WaitIODone(endpoint);
networker 0:7da612835693 984 }
networker 0:7da612835693 985
networker 0:7da612835693 986 int USBControlTransfer(int device, int request_type, int request, int value, int index, u8* data, int length, USBCallback callback, void * userData)
networker 0:7da612835693 987 {
networker 0:7da612835693 988 Setup* setup = GetSetup(device);
networker 0:7da612835693 989 if (!setup)
networker 0:7da612835693 990 return ERR_DEVICE_NOT_FOUND;
networker 0:7da612835693 991
networker 0:7da612835693 992 // Async control calls may overwrite setup buffer of previous call, so we need to wait before setting up next call
networker 0:7da612835693 993 WaitIODone(_controller.GetEndpoint(device,0));
networker 0:7da612835693 994
networker 0:7da612835693 995 setup->bm_request_type = request_type;
networker 0:7da612835693 996 setup->b_request = request;
networker 0:7da612835693 997 setup->w_value = value;
networker 0:7da612835693 998 setup->w_index = index;
networker 0:7da612835693 999 setup->w_length = length;
networker 0:7da612835693 1000 return USBTransfer(device,0,request_type & DEVICE_TO_HOST,data,length,callback,userData);
networker 0:7da612835693 1001 }
networker 0:7da612835693 1002
networker 0:7da612835693 1003 int USBInterruptTransfer(int device, int ep, u8* data, int length, USBCallback callback, void* userData)
networker 0:7da612835693 1004 {
networker 0:7da612835693 1005 return USBTransfer(device,ep,(ep & 0x80) | ENDPOINT_INTERRUPT,data,length,callback,userData);
networker 0:7da612835693 1006 }
networker 0:7da612835693 1007
networker 0:7da612835693 1008 int USBBulkTransfer(int device, int ep, u8* data, int length, USBCallback callback, void* userData)
networker 0:7da612835693 1009 {
networker 0:7da612835693 1010 return USBTransfer(device,ep,(ep & 0x80) | ENDPOINT_BULK,data,length,callback,userData);
networker 0:7da612835693 1011 }
networker 0:7da612835693 1012
networker 0:7da612835693 1013 int GetDescriptor(int device, int descType,int descIndex, u8* data, int length)
networker 0:7da612835693 1014 {
networker 0:7da612835693 1015 return USBControlTransfer(device,DEVICE_TO_HOST | RECIPIENT_DEVICE, GET_DESCRIPTOR,(descType << 8)|(descIndex), 0, data, length, 0);
networker 0:7da612835693 1016 }
networker 0:7da612835693 1017
networker 0:7da612835693 1018 int GetString(int device, int index, char* dst, int length)
networker 0:7da612835693 1019 {
networker 0:7da612835693 1020 u8 buffer[255];
networker 0:7da612835693 1021 int le = GetDescriptor(device,DESCRIPTOR_TYPE_STRING,index,buffer,sizeof(buffer));
networker 0:7da612835693 1022 if (le < 0)
networker 0:7da612835693 1023 return le;
networker 0:7da612835693 1024 if (length < 1)
networker 0:7da612835693 1025 return -1;
networker 0:7da612835693 1026 length <<= 1;
networker 0:7da612835693 1027 if (le > length)
networker 0:7da612835693 1028 le = length;
networker 0:7da612835693 1029 for (int j = 2; j < le; j += 2)
networker 0:7da612835693 1030 *dst++ = buffer[j];
networker 0:7da612835693 1031 *dst = 0;
networker 0:7da612835693 1032 return (le>>1)-1;
networker 0:7da612835693 1033 }
networker 0:7da612835693 1034
networker 0:7da612835693 1035 int SetAddress(int device, int new_addr)
networker 0:7da612835693 1036 {
networker 0:7da612835693 1037 return USBControlTransfer(device,HOST_TO_DEVICE | RECIPIENT_DEVICE, SET_ADDRESS, new_addr, 0, 0, 0, 0);
networker 0:7da612835693 1038 }
networker 0:7da612835693 1039
networker 0:7da612835693 1040 int SetConfiguration(int device, int configNum)
networker 0:7da612835693 1041 {
networker 0:7da612835693 1042 return USBControlTransfer(device,HOST_TO_DEVICE | RECIPIENT_DEVICE, SET_CONFIGURATION, configNum, 0, 0, 0, 0);
networker 0:7da612835693 1043 }
networker 0:7da612835693 1044
networker 0:7da612835693 1045 int SetInterface(int device, int ifNum, int altNum)
networker 0:7da612835693 1046 {
networker 0:7da612835693 1047 return USBControlTransfer(device,HOST_TO_DEVICE | RECIPIENT_INTERFACE, SET_INTERFACE, altNum, ifNum, 0, 0, 0);
networker 0:7da612835693 1048 }
networker 0:7da612835693 1049
networker 0:7da612835693 1050 // HUB stuff
networker 0:7da612835693 1051 int SetPortFeature(int device, int feature, int index)
networker 0:7da612835693 1052 {
networker 0:7da612835693 1053 return USBControlTransfer(device,HOST_TO_DEVICE | REQUEST_TYPE_CLASS | RECIPIENT_OTHER,SET_FEATURE,feature,index,0,0);
networker 0:7da612835693 1054 }
networker 0:7da612835693 1055
networker 0:7da612835693 1056 int ClearPortFeature(int device, int feature, int index)
networker 0:7da612835693 1057 {
networker 0:7da612835693 1058 return USBControlTransfer(device,HOST_TO_DEVICE | REQUEST_TYPE_CLASS | RECIPIENT_OTHER,CLEAR_FEATURE,feature,index,0,0);
networker 0:7da612835693 1059 }
networker 0:7da612835693 1060
networker 0:7da612835693 1061 int SetPortPower(int device, int port)
networker 0:7da612835693 1062 {
networker 0:7da612835693 1063 int r = SetPortFeature(device,PORT_POWER,port);
networker 0:7da612835693 1064 _controller.DelayMS(20); // 80ms to turn on a hubs power... DESCRIPTOR? todo
networker 0:7da612835693 1065 return r;
networker 0:7da612835693 1066 }
networker 0:7da612835693 1067
networker 0:7da612835693 1068 int SetPortReset(int device, int port)
networker 0:7da612835693 1069 {
networker 0:7da612835693 1070 return SetPortFeature(device,PORT_RESET,port);
networker 0:7da612835693 1071 }
networker 0:7da612835693 1072
networker 0:7da612835693 1073 int GetPortStatus(int device, int port, u32* status)
networker 0:7da612835693 1074 {
networker 0:7da612835693 1075 return USBControlTransfer(device,DEVICE_TO_HOST | REQUEST_TYPE_CLASS | RECIPIENT_OTHER,GET_STATUS,0,port,(u8*)status,4);
networker 0:7da612835693 1076 }