P4080 PCIe Adapter SDK User Guide Production Release

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$Set of General Math and Motor Control Functions for ARM Cortex ...$

} Freescale Semiconductor u32 dar; u32 bcr; u32 enlndar; u32 nlndar; u32 eclsdar; u32 clsdar; u32 enlsdar; u32 nlsdar; u32 ssr; u32 dsr; u8 reserved1[60]; mr – DMA mode register sr – DMA status register eclndar – DMA current link descriptor extended address register clndar – DMA current link descriptor address register satr – Source attributes register sar – Source address register datr – Destination attributes register dar – Destination address register bcr – Byte count register enlndar – Next link descriptor extended address register nlndar – Next link descriptor address register eclsdar – Current list descriptor extended address register clsdar – Current list descriptor address register enlsdar – Next list descriptor extended address register © Freescale Semiconductor, Inc., 2011. All rights reserved. Freescale Confidential Proprietary Page 62
Freescale Semiconductor nlsdar – Next list descriptor address register ssr – Source stride register dsr – Destination stride register reserved1 – Reserved field struct dma_sw_desc { }; struct dma_link_desc link_desc; u64 ring_index; u32 hw_fn_id; u32 operation; void *fd; void *ring_ptr; u8 align[8]; link_desc – DMA link descriptor format ring_index – Current index of DMA ring hw_fn_id – Hardware Function identifier used for generating Rx interrupts operation – Type of operation. It is of type “enum dma_operation” fd – <strong>P4080</strong> Frame Descriptor associated with the software descriptor. ring_ptr – Pointer to the Tx/Rx ring on Host. align – Unused field. For future alignment purposes. struct dma_link_desc { u32 s_attr; u32 s_addr; u32 d_attr; u32 d_addr; u32 nlndea; © Freescale Semiconductor, Inc., 2011. All rights reserved. Freescale Confidential Proprietary Page 63
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P4080 PCIe Adapter SDK User Guide Production Release

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