PCI: designware: Fix I/O transfers by using CPU (not realio) address

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pp->io_base, which is the input of the outbound IO address translation
unit, should be the CPU address.  It was incorrectly programmed to the
realio address.

We should pass global_io_offset rather than sys->io_offset to
pci_ioremap_io(), so we map the new window into the first available spot in
the Linux view of the I/O space.

We must also pass CPU address instead of realio address to pci_ioremap_io().

This patch fixes above issue.  It has been tested with Lecroy PTC in AIC
mode and Pericom PI7C9X2G303EL PCIe switch, which does not work otherwise.

Tested-by: Mohit Kumar <mohit.kumar@st.com>
Tested-by: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Marek Vasut <marex@denx.de
Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Cc: Richard Zhu <Hong-Xing.Zhu@freescale.com>

...

This commit is contained in:

Pratyush Anand 2013-12-11 15:08:33 +05:30 • committed by Bjorn Helgaas

parent a01ef59e13

commit fce8591f73

1 changed files with 2 additions and 3 deletions

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drivers/pci/host/pcie-designware.c

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