On Sun, Jul 02, 2006 at 06:37:18PM +0300, John Que wrote:
> Could a single call to
> pci_request_regions(pdev, driver_name)
> result in that we see 2 regions afterwards when running
> cat /proc/iomem?
Sure. Take a look at the output of 'lspci -v' some time. On my
machine, for example, I have:
05:11.0 Ethernet controller: Intel Corporation 82546GB Gigabit Ethernet
Controller (rev 03)
Subsystem: Intel Corporation PRO/1000 MT Dual Port Network Connection
Flags: bus master, 66Mhz, medium devsel, latency 64, IRQ 10
Memory at cffc0000 (64-bit, non-prefetchable) [size=128K] <===
Memory at cff00000 (64-bit, non-prefetchable) [size=256K] <===
I/O ports at e400 [size=64]
Expansion ROM at cfec0000 [disabled] [size=256K]
Capabilities: <available only to root>
05:11.1 Ethernet controller: Intel Corporation 82546GB Gigabit Ethernet
Controller (rev 03)
Subsystem: Intel Corporation PRO/1000 MT Dual Port Network Connection
Flags: bus master, 66Mhz, medium devsel, latency 64, IRQ 11
Memory at cffe0000 (64-bit, non-prefetchable) [size=128K] <===
Memory at cff80000 (64-bit, non-prefetchable) [size=256K] <===
I/O ports at e800 [size=64]
Expansion ROM at cff40000 [disabled] [size=256K]
Capabilities: <available only to root>
As you can see, each port of the dual-port card has two memory regions,
four a total of 4 memory regions.
cheers,
Lennert
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