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author | Bjorn Helgaas <bhelgaas@google.com> | 2016-06-17 14:43:34 -0500 |
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committer | Bjorn Helgaas <bhelgaas@google.com> | 2016-06-17 14:43:34 -0500 |
commit | 0ad8f06d589900b0e7006dd5194904f1c0be352c (patch) | |
tree | 4fce85cd8707c428fbe635ea5c7d14c8b86472f9 /drivers/misc/c2port | |
parent | 8221a013528597edc18d371b22667e8eefca599b (diff) | |
download | linux-0ad8f06d589900b0e7006dd5194904f1c0be352c.tar.bz2 |
microblaze/PCI: Implement pci_resource_to_user() with pcibios_resource_to_bus()
"User" addresses are shown in /sys/devices/pci.../.../resource and
/proc/bus/pci/devices and used as mmap offsets for /proc/bus/pci/BB/DD.F
files. For I/O port resources on microblaze, these are PCI bus addresses,
i.e., raw BAR values.
Previously pci_resource_to_user() computed the user address by subtracting
"hose->io_base_virt - _IO_BASE" from the resource start:
pci_resource_to_user()
if (IO)
offset = (unsigned long)hose->io_base_virt - _IO_BASE;
*start = rsrc->start - offset;
We've already told the PCI core about that "hose->io_base_virt - _IO_BASE"
offset:
pcibios_setup_phb_resources()
res = &hose->io_resource;
pci_add_resource_offset(resources, res, hose->io_base_virt - _IO_BASE);
so pcibios_resource_to_bus() knows how to do that translation.
No functional change intended.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
Diffstat (limited to 'drivers/misc/c2port')
0 files changed, 0 insertions, 0 deletions