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Altera_Forum
Honored Contributor
Honored ContributorPCIe with DMA interface locks RD_DMA_LAST_PTR reaches 127 (7F)
Hi, I have PCIe Hard IP with internal DMA interface (14.0 compiled). I wrote a PC window 7 device driver. When RD_DMA_LAST_PTR reaches 0x7Fsoftare writes 0x7F and the last descriptor ID to the PTR...
Altera_ForumHonored Contributor
Honored ContributorWhy not you firstly try to use the PCIe Avmm DMA example design and its software Driver available at below link instead of your own driver.
http://www.alterawiki.com/wiki/reference_design:_gen3_x8_avmm_256-bit_dma_for_external_ddr3_-_stratix_v
