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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2008-10-03 13:49:32 +0400 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2008-10-20 22:01:46 +0400 |
| commit | f19aeb1f3638b7bb4ca21eb361f004fac2bfe259 (patch) | |
| tree | 2990881affb22ba426149e8d4c317fe9df9992c7 /arch/ia64/pci | |
| parent | f393d9b130423a7a47c751b26df07ceaa5dc76a9 (diff) | |
| download | linux-f19aeb1f3638b7bb4ca21eb361f004fac2bfe259.tar.xz | |
PCI: Add ability to mmap legacy_io on some platforms
This adds the ability to mmap legacy IO space to the legacy_io files
in sysfs on platforms that support it. This will allow to clean up
X to use this instead of /dev/mem for legacy IO accesses such as
those performed by Int10.
While at it I moved pci_create/remove_legacy_files() to pci-sysfs.c
where I think they belong, thus making more things statis in there
and cleaned up some spurrious prototypes in the ia64 pci.h file
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'arch/ia64/pci')
| -rw-r--r-- | arch/ia64/pci/pci.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/ia64/pci/pci.c b/arch/ia64/pci/pci.c index 7545037a8625..211fcfd115f9 100644 --- a/arch/ia64/pci/pci.c +++ b/arch/ia64/pci/pci.c @@ -614,12 +614,17 @@ char *ia64_pci_get_legacy_mem(struct pci_bus *bus) * vector to get the base address. */ int -pci_mmap_legacy_page_range(struct pci_bus *bus, struct vm_area_struct *vma) +pci_mmap_legacy_page_range(struct pci_bus *bus, struct vm_area_struct *vma, + enum pci_mmap_state mmap_state) { unsigned long size = vma->vm_end - vma->vm_start; pgprot_t prot; char *addr; + /* We only support mmap'ing of legacy memory space */ + if (mmap_state != pci_mmap_mem) + return -ENOSYS; + /* * Avoid attribute aliasing. See Documentation/ia64/aliasing.txt * for more details. |