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| author | Arnd Bergmann <arnd@arndb.de> | 2012-08-13 16:56:29 +0200 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2012-08-13 16:56:29 +0200 |
| commit | 19ec6caca2da706f11646249ba280177fec359fa (patch) | |
| tree | 6064421bc4924e7debdc8576a187cbdec4b8c352 /arch/arm/mm/ioremap.c | |
| parent | Linux 3.6-rc1 (diff) | |
| parent | ARM: iop3xx: use fixed PCI i/o mapping (diff) | |
| download | linux-19ec6caca2da706f11646249ba280177fec359fa.tar.xz linux-19ec6caca2da706f11646249ba280177fec359fa.zip | |
Merge branch 'cleanup/io-pci' into next/cleanups
From Rob Herring <robherring2@gmail.com>:
This is the 2nd part of mach/io.h removals. This series removes io.h on
platforms with PCI by creating a fixed virtual I/O mapping and a common
__io() macro.
This version has changed a bit to accommodate Tegra converting its PCIe
host to a platform driver. Now the virtual space is only reserved during
early boot before .map_io() is called. The mapping is not created until
calling pci_ioremap_io which can be done at any point after vmalloc is
initialized.
I've gone back to fixed 64K windows for each PCI bus. This allows
removing all the i/o resource setup from the individually platforms and
placing it within the common ARM PCI code.
I've only tested versatilepb under qemu (with the model hacked up to
actually enable i/o space), so any testing is appreciated. iop3xx and
mv78xx0 have some risk of breaking as the PCI bus addresses are moved
to 0 from matching the cpu host bus addesss.
* cleanup/io-pci:
ARM: iop3xx: use fixed PCI i/o mapping
ARM: mv78xx0: use fixed pci i/o mapping
ARM: iop13xx: use fixed PCI i/o mapping
iop13xx: use more regular PCI I/O space handling
ARM: orion5x: use fixed PCI i/o mapping
ARM: kirkwood: use fixed PCI i/o mapping
ARM: dove: use fixed PCI i/o mapping
ARM: footbridge: use fixed PCI i/o mapping
ARM: shark: use fixed PCI i/o mapping
ARM: integrator: remove trailing whitespace on pci_v3.c
ARM: integrator: use fixed PCI i/o mapping
ARM: tegra: use fixed PCI i/o mapping
ARM: versatile: use fixed PCI i/o mapping
ARM: move PCI i/o resource setup into common code
ARM: Add fixed PCI i/o mapping
i2c: iop3xx: use standard gpiolib functions
i2c: iop3xx: clean-up trailing whitespace
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/arm/mm/ioremap.c')
| -rw-r--r-- | arch/arm/mm/ioremap.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm/mm/ioremap.c b/arch/arm/mm/ioremap.c index 566750fa57d4..9d869f93a3da 100644 --- a/arch/arm/mm/ioremap.c +++ b/arch/arm/mm/ioremap.c @@ -36,6 +36,7 @@ #include <asm/system_info.h> #include <asm/mach/map.h> +#include <asm/mach/pci.h> #include "mm.h" int ioremap_page(unsigned long virt, unsigned long phys, @@ -383,3 +384,16 @@ void __arm_iounmap(volatile void __iomem *io_addr) arch_iounmap(io_addr); } EXPORT_SYMBOL(__arm_iounmap); + +#ifdef CONFIG_PCI +int pci_ioremap_io(unsigned int offset, phys_addr_t phys_addr) +{ + BUG_ON(offset + SZ_64K > IO_SPACE_LIMIT); + + return ioremap_page_range(PCI_IO_VIRT_BASE + offset, + PCI_IO_VIRT_BASE + offset + SZ_64K, + phys_addr, + __pgprot(get_mem_type(MT_DEVICE)->prot_pte)); +} +EXPORT_SYMBOL_GPL(pci_ioremap_io); +#endif |