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From:   Hector Martin <marcan@marcan.st>
To:     linux-arm-kernel@lists.infradead.org
Cc:     Hector Martin <marcan@marcan.st>, Marc Zyngier <maz@kernel.org>,
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Subject: [RFT PATCH v3 11/27] arm64: Implement ioremap_np() to map MMIO as nGnRnE
Date:   Fri,  5 Mar 2021 06:38:46 +0900
Message-Id: <20210304213902.83903-12-marcan@marcan.st>
In-Reply-To: <20210304213902.83903-1-marcan@marcan.st>
References: <20210304213902.83903-1-marcan@marcan.st>
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This is used on Apple ARM platforms, which require most MMIO
(except PCI devices) to be mapped as nGnRnE.

Signed-off-by: Hector Martin <marcan@marcan.st>
---
 arch/arm64/include/asm/io.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/include/asm/io.h b/arch/arm64/include/asm/io.h
index 5ea8656a2030..953b8703af60 100644
--- a/arch/arm64/include/asm/io.h
+++ b/arch/arm64/include/asm/io.h
@@ -169,6 +169,7 @@ extern void __iomem *ioremap_cache(phys_addr_t phys_addr, size_t size);
 
 #define ioremap(addr, size)		__ioremap((addr), (size), __pgprot(PROT_DEVICE_nGnRE))
 #define ioremap_wc(addr, size)		__ioremap((addr), (size), __pgprot(PROT_NORMAL_NC))
+#define ioremap_np(addr, size)		__ioremap((addr), (size), __pgprot(PROT_DEVICE_nGnRnE))
 
 /*
  * PCI configuration space mapping function.
-- 
2.30.0