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arm64: Extend the PCI I/O space to 16MB

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The patch moves the PCI I/O space (currently at 64K) before the
earlyprintk mapping and extends it to 16MB.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Catalin Marinas 2014-02-04 16:37:59 +00:00
parent d8ed442a00
commit 22bd1c91fe
2 changed files with 11 additions and 7 deletions
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16
Documentation/arm64/memory.txt
View File

@ -35,11 +35,13 @@ ffffffbc00000000 ffffffbdffffffff 8GB vmemmap
ffffffbe00000000 ffffffbffbbfffff ~8GB [guard, future vmmemap]
ffffffbffa000000 ffffffbffaffffff 16MB PCI I/O space
ffffffbffb000000 ffffffbffbbfffff 12MB [guard]
ffffffbffbc00000 ffffffbffbdfffff 2MB earlyprintk device
ffffffbffbe00000 ffffffbffbe0ffff 64KB PCI I/O space
ffffffbffbe10000 ffffffbcffffffff ~2MB [guard]
ffffffbffbe00000 ffffffbffbffffff 2MB [guard]
ffffffbffc000000 ffffffbfffffffff 64MB modules
@ -60,11 +62,13 @@ fffffdfc00000000 fffffdfdffffffff 8GB vmemmap
fffffdfe00000000 fffffdfffbbfffff ~8GB [guard, future vmmemap]
fffffdfffa000000 fffffdfffaffffff 16MB PCI I/O space
fffffdfffb000000 fffffdfffbbfffff 12MB [guard]
fffffdfffbc00000 fffffdfffbdfffff 2MB earlyprintk device
fffffdfffbe00000 fffffdfffbe0ffff 64KB PCI I/O space
fffffdfffbe10000 fffffdfffbffffff ~2MB [guard]
fffffdfffbe00000 fffffdfffbffffff 2MB [guard]
fffffdfffc000000 fffffdffffffffff 64MB modules

2
arch/arm64/include/asm/io.h
View File

@ -121,7 +121,7 @@ static inline u64 __raw_readq(const volatile void __iomem *addr)
* I/O port access primitives.
*/
#define IO_SPACE_LIMIT 0xffff
#define PCI_IOBASE ((void __iomem *)(MODULES_VADDR - SZ_2M))
#define PCI_IOBASE ((void __iomem *)(MODULES_VADDR - SZ_32M))
static inline u8 inb(unsigned long addr)
{