4 * - Universal Host Controller Interface
10 typedef struct sUHCI_Controller tUHCI_Controller;
11 typedef struct sUHCI_ExtraTDInfo tUHCI_ExtraTDInfo;
13 typedef struct sUHCI_TD tUHCI_TD;
14 typedef struct sUHCI_QH tUHCI_QH;
17 struct sUHCI_ExtraTDInfo
27 #define TD_CTL_IOC (1 << 24)
29 #define TD_CTL_ACTIVE (1 << 23)
30 #define TD_CTL_STALLED (1 << 22)
31 #define TD_CTL_DATABUFERR (1 << 21)
32 #define TD_CTL_BABBLE (1 << 20)
33 #define TD_CTL_NAK (1 << 19)
34 #define TD_CTL_CRCERR (1 << 18)
35 #define TD_CTL_BITSTUFF (1 << 17)
36 #define TD_CTL_RESERVED (1 << 16)
41 * \brief Next Entry in list
45 * 2 - Depth/Breadth Select
47 * 0 - Terminate (Last in List)
52 * \brief Control and Status Field
55 * 29 - Short Packet Detect (Input Only)
56 * 28:27 - Number of Errors Allowed
57 * 26 - Low Speed Device (Communicating with a low speed device)
58 * 25 - Isynchonious Select
59 * 24 - Interrupt on Completion (IOC)
63 * 21 - Data Buffer Error
64 * 20 - Babble Detected
66 * 18 - CRC/Timout Error
70 * 10:0 - Actual Length (Number of bytes transfered)
75 * \brief Packet Header
77 * 31:21 - Maximum Length (0=1, Max 0x4FF, 0x7FF=0)
81 * 14:8 - Device Address
82 * 7:0 - PID (Packet Identifcation) - Only 96, E1, 2D allowed
91 * \brief Pointer to the data to send
97 tUHCI_ExtraTDInfo *ExtraInfo;
98 char bActive; // Allocated
99 Uint8 QueueIndex; // QH, 0-127 are interrupt, 128 undef, 129 Control, 130 Bulk
100 char bFreePointer; // Free \a BufferPointer once done
102 } __attribute__((aligned(16)));
107 * \brief Next Entry in list
112 * 0 - Terminate (Last in List)
118 * \brief Next Entry in list
123 * 0 - Terminate (Last in List)
128 * \note Area for software use
129 * \brief Last TD in this list, used to add things to the end
132 } __attribute__((aligned(16)));
134 struct sUHCI_Controller
137 * \brief PCI Device ID
142 * \brief IO Base Address
147 * \brief Memory Mapped-IO base address
152 * \brief IRQ Number assigned to the device
157 * \brief Number of the last frame to be cleaned
159 int LastCleanedFrame;
164 * 31:4 - Frame Pointer
167 * 0 - Terminate (Empty Pointer)
172 * \brief Physical Address of the Frame List
174 tPAddr PhysFrameList;
179 * \brief Load in bytes on each interrupt queue
181 int InterruptLoad[128];
186 // 127 Interrupt Queue Heads
187 // - 4ms -> 256ms range of periods
188 tUHCI_QH InterruptQHs[0];
189 tUHCI_QH InterruptQHs_256ms[64];
190 tUHCI_QH InterruptQHs_128ms[32];
191 tUHCI_QH InterruptQHs_64ms [16];
192 tUHCI_QH InterruptQHs_32ms [ 8];
193 tUHCI_QH InterruptQHs_16ms [ 4];
194 tUHCI_QH InterruptQHs_8ms [ 2];
195 tUHCI_QH InterruptQHs_4ms [ 1];
201 tUHCI_TD LocalTDPool[ (4096-(128+2)*sizeof(tUHCI_QH)) / sizeof(tUHCI_TD) ];
205 // === ENUMERATIONS ===
208 * \brief USB Command Register
211 * 7 - Maximum Packet Size selector (1: 64 bytes, 0: 32 bytes)
212 * 6 - Configure Flag (No Hardware Effect)
213 * 5 - Software Debug (Don't think it will be needed)
214 * 4 - Force Global Resume
215 * 3 - Enter Global Suspend Mode
216 * 2 - Global Reset (Resets all devices on the bus)
217 * 1 - Host Controller Reset (Reset just the controller)
222 * \brief USB Status Register
225 * 5 - HC Halted, set to 1 when USBCMD:RS is set to 0
226 * 4 - Host Controller Process Error (Errors related to the bus)
227 * 3 - Host System Error (Errors related to the OS/PCI Bus)
228 * 2 - Resume Detect (Set if a RESUME command is sent to the Controller)
229 * 1 - USB Error Interrupt
230 * 0 - USB Interrupts (Set if a transaction with the IOC bit set is completed)
234 * \brief USB Interrupt Enable Register
237 * 3 - Short Packet Interrupt Enable
238 * 2 - Interrupt on Complete (IOC) Enable
239 * 1 - Resume Interrupt Enable
240 * 0 - Timout / CRC Error Interrupt Enable
244 * \brief Frame Number (Index into the Frame List)
247 * 10:0 - Index (Incremented each approx 1ms)
251 * \brief Frame List Base Address
253 * 31:12 - Pysical Address >> 12
254 * 11:0 - Reserved (Set to Zero)
256 FLBASEADD = 0x08, // 32-bit
258 * \brief Start-of-frame Modify Register
261 * Sets the size of a frame
262 * Frequency = (11936+n)/12000 kHz
267 SOFMOD = 0x0C, // 8bit
269 * \brief Port Status and Controll Register (Port 1)
275 * 8 - Low Speed Device Attached
277 * 3 - Port Enable/Disable Change - Used for detecting device removal
278 * 2 - Port Enable/Disable
279 * 1 - Connect Status Change
280 * 0 - Current Connect Status
284 * \brief Port Status and Controll Register (Port 2)