Messages in this thread | | | Date | Fri, 25 Jun 2010 22:13:27 -0600 | From | Robert Hancock <> | Subject | Re: Setting up Silicon image 3114 in DMA mode |
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On 06/25/2010 02:25 AM, amruth pattanada wrote: > Hi > Can anybody please guide me what minimal steps to follow for setting > up 3114 for operating in DMA mode and looked into linux 2.6.32.7 code. > I am porting 3114 driver to RTOS but have problems in using BAR5 PCI > config space because of Memory mapped region issues. I can access BAR4 > and plan to set up DMA mode. > How do we access entire BAR5 memory space without using BAR5, is there > any indirect way to access BAR5 using BAR4. Please let me know. > Thanks > Amruth p.v > Sr.Embedded Engineer
See the datasheet (PCI Configuration Space section), there's a way to access BAR5 registers using indirect access registers in configuration space. I expect this will be relatively slow, however.
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