On Sun, 2003-03-23 at 17:30, Christian Jaeger wrote:
> - What does pci_resource_start return, a phys/virt/bus address?
Normally a pci bus address, but its really a cookie
> - What does ioremap expect?
The same cookie
> - do I need pci_set_master? Which other PCI calls are important?
You need enable_device, and before you touch the others. That should
ensure the hardware is in D0 (active) not powersaving or some other
inconvenience
Basically the logic goes
Ask the pci layer for pci register values
Feed values to ioremap
Get a cookie for use with readb/readw/readl etc
The return of ioremap may be a physical mapping, it might be the
cpu view of the bus address, or something else.
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This archive was generated by hypermail 2b29 : Sun Mar 23 2003 - 22:00:45 EST