[PATCH V4 04/32] xen/arm: Add helpers ioreadl/iowritel

From: Julien Grall <julien.grall@linaro.org>
To: xen-devel@lists.xen.org
Cc: patches@linaro.org, ian.campbell@citrix.com,
	Julien Grall <julien.grall@linaro.org>,
	Stefano.Stabellini@eu.citrix.com
Subject: [PATCH V4 04/32] xen/arm: Add helpers ioreadl/iowritel
Date: Fri, 10 May 2013 16:11:56 +0100	[thread overview]
Message-ID: <1368198723-24639-5-git-send-email-julien.grall@linaro.org> (raw)
In-Reply-To: <1368198723-24639-1-git-send-email-julien.grall@linaro.org>

Signed-off-by: Julien Grall <julien.grall@linaro.org>
---
 xen/include/asm-arm/mm.h |   10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/xen/include/asm-arm/mm.h b/xen/include/asm-arm/mm.h
index 63e1069..3749f44 100644
--- a/xen/include/asm-arm/mm.h
+++ b/xen/include/asm-arm/mm.h
@@ -171,6 +171,16 @@ static inline void __iomem *ioremap_wc(paddr_t start, size_t len)
     return ioremap_attr(start, len, PAGE_HYPERVISOR_WC);
 }
 
+static inline uint32_t ioreadl(const volatile void __iomem *addr)
+{
+    return (*(volatile uint32_t *)addr);
+}
+
+static inline void iowritel(const volatile void __iomem *addr, uint32_t val)
+{
+    *(volatile uint32_t *)addr = val;
+}
+
 #define mfn_valid(mfn)        ({                                              \
     unsigned long __m_f_n = (mfn);                                            \
     likely(__m_f_n < max_page);                                               \
-- 
1.7.10.4
