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Altera_Forum
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14 years ago

PCIe DMA not working for addresses above 4GB

HI, I am implementing a KMDF driver for Altera Stratix4 PCIe board on Windows7 64 bit PC ( Both OS and processor are 64 bit). The devices needs that I create a Descriptor Table(DT) in a non pag...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

A master in SOPC Builder or Qsys can only access up to 4GB. This is due to the address width in the Avalon spec only supporting up to 32 bits.