CDA CD 60 Spezifikationen PDF herunterladen (Seite 16)

PCI CD and PCI CDa

Document Number: 008-00965-06 EDT Public Revision: I December 2004

Template: edt.dot

Page 16

Routine Description

edt_last_buffer_timed Like edt_last_buffer but also returns the time at which the dma was

complete on this buffer.

edt_configure_ring_buffers Configures the ring buffers.

edt_buffer_addresses Returns an array of addresses referencing the ring buffers.

edt_disable_ring_buffers Stops DMA transfer, disables ring buffers and releases resources.

edt_ring_buffer_overrun Detects ring buffer overrun which may have corrupted data.

edt_reset_ring_buffers Stops DMA in progress and resets the ring buffers.

edt_configure_block_buffers Configures ring buffers using a contiguous block of memory.

edt_startdma_action Specifies when to perform the action at the start of a dma transfer

as set by edt_startdma_reg().

edt_enddma_action Specifies when to perform the action at the end of a dma transfer

as set by edt_ednddma_reg().

edt_startdma_reg Specifies the register and value to use at the start of dma, as set by

edt_startdma_action().

edt_abort_dma Cancels the current DMA, resets pointers to the current buffer.

edt_ablort_current_dma Cancels the current DMA, moves pointers to the next buffer.

edt_get_bytecount Returns the number of bytes transferred.

edt_timeouts Returns the cumulative number of timeouts since the device was

opened.

edt_get_timeout_count Returns the number of bytes transferred as of the last timeout.

edt_set_timeout_action Sets the driver behavior on a timeout.

edt_get_timeout_goodbits Returns the number of bits from the remote device since the last

timeout.

edt_do_timeout Causes the driver to perform the same actions as it would on a

timeout (causing partially filled fifos to be flushed and dma to be

aborted).

edt_get_rtimeout Gets the DMA read timeout period.

edt_set_rtimeout Sets how long to wait for a DMA read to complete, before returning.

edt_get_wtimeout Gets the DMA write timeout period.

edt_set_wtimeout Sets how long to wait for a DMA write to complete, before

returning.

edt_get_timestamp Gets the seconds and microseconds timestamp of dma completion

on the buffer specified by bufnum.

edt_get_reftime Gets the seconds and mircroseconds timestamp in the same

format as the buffer_timed function.

edt_ref_tmstamp Used for debugging. Able to see a history with setdebug -g with

an application defined event in the same timeline as driver events.

edt_get_burst_enable Returns a value indicating whether PCI Bus burst transfers are

enabled during DMA.

edt_set_burst_enable Turns on or off PCI Bus burst transfers during DMA.

edt_get_firstflush Returns the value set by edt_set_firstflush(). This is an obsolete

function.

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