From: Lennert Buytenhek Date: Sat, 7 Nov 2009 13:49:18 +0000 (+0100) Subject: [ARM] kirkwood: fix PCI I/O port assignment X-Git-Tag: v2.6.32-rc7~42^2~3^2~3 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=35f029e2514be209eb0e88c7d927f3bcc42a5cc2;p=pandora-kernel.git [ARM] kirkwood: fix PCI I/O port assignment Instead of allocating PCI devices I/O port bus addresses from the 000xxxxx I/O port range as intended, due to a bus versus physical address mixup, the Kirkwood PCIe handling code inadvertently allocated I/O port bus addresses from the f20xxxxx address range (which is the physical address range of the PCIe I/O mapping window), but then direct all I/O port accesses to bus addresses 000xxxxx, which would then not be decoded at all. Fix this by setting the base address of the PCIe I/O space struct resource to KIRKWOOD_PCIE_IO_BUS_BASE instead of the incorrect KIRKWOOD_PCIE_IO_PHYS_BASE, and fix up __io() to expect addresses offsetted by the former instead of the latter. (The suggested fix of directing I/O port accesses from the host to bus addresses f20xxxxx instead has the problem that assigning full 32bit I/O port bus addresses (f20xxxxx) doesn't work on all PCI devices, as not all PCI devices implement full 32 bit BAR registers for I/O ports. We should really try to allocate I/O port bus addresses that fit in 16 bits.) Signed-off-by: Lennert Buytenhek Signed-off-by: Nicolas Pitre --- Reading git-diff-tree failed