Hello Kenji-san,
Kenji Kaneshige wrote:
I'm not sure, but I guess pci_setup_bridge() didn't update IO base/limit
and Mem base/limit of the bridge (0000:00:02.0) because of the following
lines.
static void pci_setup_bridge(struct pci_bus *bus)
{
struct pci_dev *bridge = bus->self;
struct resource *res;
struct pci_bus_region region;
u32 l, bu, lu, io_upper16;
if (pci_is_enabled(bridge))
<===============================
return; <===============================
dev_info(&bridge->dev, "PCI bridge to [bus %02x-%02x]\n",
bus->secondary, bus->subordinate);
...
It seems the bridge was already enabled by
pci_assign_unassigned_resources()
at boot time. Does removing those lines make any change?
Yes, with these lines removed bridge memory window is properly allocated.
For some reason bridge memory is disabled, but if I enable it via
setpci, and
also enable device memory, then everything works fine. If the system is
booted
when device behind the bridge is plugged in, bridge memory is enabled.
Thanks a lot for your help.
Felix.
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