Do you have a question? Post it now! No Registration Necessary
posted on April 6, 2007, 9:48 pm
Reply
Save
Print
I am DMA'ing from 60x memory to PCI memory and from PCI memory to 60x
memory in a Linux device driver using the MPC8272 processor. The DMA
completes but the logic analyzer shows that the DMA is broken up into
a series of 32 byte (8 dword) transfers, no matter what the byte count
is in the segment descriptor. Shouldn't I be able to do the transfer
in a single DMA transfer? If so, how? Is there a register setting I
am missing?
memory in a Linux device driver using the MPC8272 processor. The DMA
completes but the logic analyzer shows that the DMA is broken up into
a series of 32 byte (8 dword) transfers, no matter what the byte count
is in the segment descriptor. Shouldn't I be able to do the transfer
in a single DMA transfer? If so, how? Is there a register setting I
am missing?
Site Timeline
- » How to programmatically detect a mounted device
- — Next thread in » Embedded Linux
-
- » getting IP addresses of network interfaces on Linux box
- — Previous thread in » Embedded Linux
-
- » Crosscompiling for ARM: reloc type R_ARM_ABS32 is not supported for PIC - ...
- — Newest thread in » Embedded Linux
-
- » Miejscowa konkurencja dla chińskich prototypów pcb
- — The site's Newest Thread. Posted in » Electronics (Polish)
-
- » Tiny 2040 - size of a postage stamp
- — The site's Last Updated Thread. Posted in » Raspberry Pi Group
-
XML Sitemap