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| author | Liviu Dudau <Liviu.Dudau@arm.com> | 2014-09-29 16:29:30 +0200 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2014-10-01 01:08:57 +0200 |
| commit | 8b921acfeffdb0b45085da862fc301a2d25ed2cf (patch) | |
| tree | 4772e01279a51f92b80f22b1a5f57356c08b9bdc /include/asm-generic | |
| parent | of/pci: Add support for parsing PCI host bridge resources from DT (diff) | |
| download | linux-8b921acfeffdb0b45085da862fc301a2d25ed2cf.tar.xz linux-8b921acfeffdb0b45085da862fc301a2d25ed2cf.zip | |
PCI: Add pci_remap_iospace() to map bus I/O resources
Add pci_remap_iospace() to map bus I/O resources into the CPU virtual
address space. Architectures with special needs may provide their own
version, but most should be able to use this one.
This function is useful for PCI host bridge drivers that need to map the
PCI I/O resources into virtual memory space.
[bhelgaas: phys_addr description, drop temporary "err" variable]
Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
CC: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'include/asm-generic')
| -rw-r--r-- | include/asm-generic/pgtable.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h index 53b2acc38213..977e545a64c3 100644 --- a/include/asm-generic/pgtable.h +++ b/include/asm-generic/pgtable.h @@ -249,6 +249,10 @@ static inline int pmd_same(pmd_t pmd_a, pmd_t pmd_b) #define pgprot_writecombine pgprot_noncached #endif +#ifndef pgprot_device +#define pgprot_device pgprot_noncached +#endif + /* * When walking page tables, get the address of the next boundary, * or the end address of the range if that comes earlier. Although no |