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Open FFBoard
Open source force feedback firmware
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Open FFBoard
Open source force feedback firmware
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Go to the source code of this file.
Classes | |
| union | ehci_link_t |
| Link pointer. More... | |
| struct | ehci_qtd_t |
| struct | ehci_registers_t |
| struct | ehci_cap_registers_t |
Functions | |
| TU_VERIFY_STATIC (sizeof(ehci_link_t)==4, "size is not correct") | |
| TU_VERIFY_STATIC (sizeof(ehci_qtd_t)==32, "size is not correct") | |
| struct | TU_ATTR_ALIGNED (32) |
| Queue Head. More... | |
| TU_VERIFY_STATIC (sizeof(ehci_qhd_t)==64, "size is not correct") | |
| TU_VERIFY_STATIC (sizeof(ehci_itd_t)==64, "size is not correct") | |
| TU_VERIFY_STATIC (sizeof(ehci_sitd_t)==32, "size is not correct") | |
| TU_VERIFY_STATIC (sizeof(ehci_cap_registers_t)==16, "size is not correct") | |
Variables | |
| C | |
| ehci_qhd_t | |
| ehci_itd_t | |
| ehci_sitd_t | |
| anonymous enum |
| anonymous enum |
| anonymous enum |
| anonymous enum |
| anonymous enum |
| anonymous enum |
| struct TU_ATTR_ALIGNED | ( | 32 | ) |
Queue Head.
Split (Full-Speed) Isochronous Transfer Descriptor.
Highspeed Isochronous Transfer Descriptor (section 3.3)
< device address
< Only valid for Periodic with Full/Slow speed
< EP number
< 0: Full, 1: Low, 2: High
< 0: use DT in qHD, 1: use DT in qTD
< Head of the queue
< Max packet size
< 1 if is Full/Low speed control endpoint
< Used by HC
< Interrupt Schedule Mask
< Split Completion Mask for Full/Slow speed
< Hub Address for Full/Slow speed
< Hub Port for Full/Slow speed
< Transaction per micro frame
Due to the fact QHD is 32 bytes aligned but occupies only 48 bytes
thus there are 16 bytes padding free that we can make use of.
< This field is a value that is an offset, expressed in bytes, from the beginning of a buffer.
< These bits are set by software to indicate which of the buffer page pointers the offset field in this slot should be concatenated to produce the starting memory address for this transaction. The valid range of values for this field is 0 to 6
< If this bit is set to a one, it specifies that when this transaction completes, the Host Controller should issue an interrupt at the next interrupt threshold
< For an OUT, this field is the number of data bytes the host controller will send during the transaction. The host controller is not required to update this field to reflect the actual number of bytes transferred during the transfer
< For an IN, the initial value of the field is the number of bytes the host expects the endpoint to deliver. During the status update, the host controller writes back the number of bytes successfully received. The value in this register is the actual byte count
< Set to a one by the Host Controller during status update in the case where the host did not receive a valid response from the device (Timeout, CRC, Bad PID, etc.). This bit may only be set for isochronous IN transactions.
< Set to a 1 by the Host Controller during status update when a babble is detected during the transaction
< Set to a 1 by the Host Controller during status update to indicate that the Host Controller is unable to keep up with the reception of incoming data (overrun) or is unable to supply data fast enough during transmission (underrun).
< Set to 1 by software to enable the execution of an isochronous transaction by the Host Controller
< This field selects the specific device serving as the data source or sink.
< reserved
< This 4-bit field selects the particular endpoint number on the device serving as the data source or sink.
< This field is reserved and should be set to zero.
< This field holds the device address of the transaction translators’ hub.
< reserved
< This field is the port number of the recipient transaction translator.
< 0 = OUT; 1 = IN. This field encodes whether the full-speed transaction should be an IN or OUT.
< This field (along with the Activeand SplitX-statefields in the Statusbyte) are used to determine during which micro-frames the host controller should execute complete-split transactions
< This field (along with the Activeand SplitX-statefields in the Statusbyte) are used to determine during which micro-frames the host controller should execute start-split transactions.
< reserved
< This field is used by the host controller to record which split-completes have been executed. See Section 4.12.3.3.2 for behavioral requirements.
< This field is initialized by software to the total number of bytes expected in this transfer. Maximum value is 1023
< reserved
< Used to indicate which data page pointer should be concatenated with the CurrentOffsetfield to construct a data buffer pointer
< Do not interrupt when transaction is complete. 1 = Do interrupt when transaction is complete
Word 4-5: Buffer Pointer List
SITD is 32-byte aligned but occupies only 28 --> 4 bytes for storing extra data
| TU_VERIFY_STATIC | ( | sizeof(ehci_cap_registers_t) | = =16, |
| "size is not correct" | |||
| ) |
| TU_VERIFY_STATIC | ( | sizeof(ehci_itd_t) | = =64, |
| "size is not correct" | |||
| ) |
| TU_VERIFY_STATIC | ( | sizeof(ehci_link_t) | = =4, |
| "size is not correct" | |||
| ) |
| TU_VERIFY_STATIC | ( | sizeof(ehci_qhd_t) | = =64, |
| "size is not correct" | |||
| ) |
| TU_VERIFY_STATIC | ( | sizeof(ehci_qtd_t) | = =32, |
| "size is not correct" | |||
| ) |
| TU_VERIFY_STATIC | ( | sizeof(ehci_sitd_t) | = =32, |
| "size is not correct" | |||
| ) |
|
extern |
1.9.2