linux-kernel - [PATCH] arm64: Define HAVE_ARCH_PIO

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Date:	Mon, 13 Jul 2015 14:31:36 -0700
From:	David Daney <ddaney.cavm@...il.com>
To:	linux-arm-kernel@...ts.infradead.org,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will.deacon@....com>
Cc:	linux-kernel@...r.kernel.org, Robert Richter <rrichter@...ium.com>,
	David Daney <david.daney@...ium.com>
Subject: [PATCH] arm64: Define HAVE_ARCH_PIO_SIZE and related symbols.

From: David Daney <david.daney@...ium.com>

Needed to make pci_iomap() work.

Signed-off-by: David Daney <david.daney@...ium.com>
---
 arch/arm64/include/asm/io.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm64/include/asm/io.h b/arch/arm64/include/asm/io.h
index 540f7c0..8ef78d5 100644
--- a/arch/arm64/include/asm/io.h
+++ b/arch/arm64/include/asm/io.h
@@ -149,6 +149,11 @@ static inline u64 __raw_readq(const volatile void __iomem *addr)
 #define IO_SPACE_LIMIT		(PCI_IO_SIZE - 1)
 #define PCI_IOBASE		((void __iomem *)PCI_IO_START)
 
+#define HAVE_ARCH_PIO_SIZE	1
+#define PIO_RESERVED		SZ_32M
+#define PIO_OFFSET		0
+#define PIO_MASK		(PIO_RESERVED - 1)
+
 /*
  * String version of I/O memory access operations.
  */
-- 
1.7.11.7

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