lkml.org 
[lkml]   [2014]   [Feb]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v2 2/3] arm64: Extend the PCI I/O space to 16MB
Date
From: Catalin Marinas <catalin.marinas@arm.com>

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>

diff --git a/Documentation/arm64/memory.txt b/Documentation/arm64/memory.txt
index 5e054bf..85e24c4 100644
--- a/Documentation/arm64/memory.txt
+++ b/Documentation/arm64/memory.txt
@@ -35,11 +35,13 @@ ffffffbc00000000 ffffffbdffffffff 8GB vmemmap

ffffffbe00000000 ffffffbffbbfffff ~8GB [guard, future vmmemap]

-ffffffbffbc00000 ffffffbffbdfffff 2MB earlyprintk device
+ffffffbffa000000 ffffffbffaffffff 16MB PCI I/O space
+
+ffffffbffb000000 ffffffbffbbfffff 12MB [guard]

-ffffffbffbe00000 ffffffbffbe0ffff 64KB PCI I/O space
+ffffffbffbc00000 ffffffbffbdfffff 2MB earlyprintk device

-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]

-fffffdfffbc00000 fffffdfffbdfffff 2MB earlyprintk device
+fffffdfffa000000 fffffdfffaffffff 16MB PCI I/O space
+
+fffffdfffb000000 fffffdfffbbfffff 12MB [guard]

-fffffdfffbe00000 fffffdfffbe0ffff 64KB PCI I/O space
+fffffdfffbc00000 fffffdfffbdfffff 2MB earlyprintk device

-fffffdfffbe10000 fffffdfffbffffff ~2MB [guard]
+fffffdfffbe00000 fffffdfffbffffff 2MB [guard]

fffffdfffc000000 fffffdffffffffff 64MB modules

diff --git a/arch/arm64/include/asm/io.h b/arch/arm64/include/asm/io.h
index 4cc813e..7846a6b 100644
--- a/arch/arm64/include/asm/io.h
+++ b/arch/arm64/include/asm/io.h
@@ -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)
{
--
1.9.0


\
 
 \ /
  Last update: 2014-02-27 15:01    [W:0.125 / U:14.296 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site