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Altera_Forum
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17 years ago

Altera PCI Express Development Kit: Linux DMA Driver

Hi, I am a newbie to FPGA design and implementation. While installing the PCI express board on LINUX machine, I don't see Demo application driver for DMA read and write for LINUX (Manual talk...
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Altera_Forum
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16 years ago

Well,I decided to give the altpcichdma driver manually the interrupt line.

From the /proc/interrupts,give the driver a free INT.In mine case INT#7.

Write dev->irq_line=7.

irq_line=7.

rc=request_int(7,...);

Dont let the driver to automatically detect the INT.

In that case I've passed the DMA test successfuly.

BAR[0] mapped at 0xffffc20010370000 with length 32768(/268435456).

BAR[2] mapped at 0xffffc2000002a000 with length 256(/262144).

Specify the bar struct={268435456,0,262144};