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From: Christoph Hellwig <hch@lst.de>
To: Arnd Bergmann <arnd@arndb.de>, Guo Ren <guoren@kernel.org>,
	Michal Simek <monstr@monstr.eu>,
	Greentime Hu <green.hu@gmail.com>,
	Vincent Chen <deanbo422@gmail.com>, Guan Xuetao <gxt@pku.edu.cn>,
	x86@kernel.org
Cc: linux-arch@vger.kernel.org, linux-s390@vger.kernel.org,
	linux-ia64@vger.kernel.org, linux-parisc@vger.kernel.org,
	linux-sh@vger.kernel.org, linux-hexagon@vger.kernel.org,
	linux-xtensa@linux-xtensa.org, linux-mips@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-m68k@lists.linux-m68k.org,
	openrisc@lists.librecores.org, linux-mtd@lists.infradead.org,
	linux-alpha@vger.kernel.org, sparclinux@vger.kernel.org,
	nios2-dev@lists.rocketboards.org,
	linux-riscv@lists.infradead.org,
	linux-snps-arc@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH 06/26] ia64: rename ioremap_nocache to ioremap_uc
Date: Sat, 17 Aug 2019 09:32:33 +0200	[thread overview]
Message-ID: <20190817073253.27819-7-hch@lst.de> (raw)
In-Reply-To: <20190817073253.27819-1-hch@lst.de>

On ia64 ioremap_nocache fails if attributs don't match.  Not other
architectures does this, and we plan to get rid of ioremap_nocache.
So get rid of the special semantics and define ioremap_nocache in
terms of ioremap as no portable driver could rely on the behavior
anyway.

However x86 implements ioremap_uc with a in a similar way as the ia64
version of ioremap_nocache, so implement that instead.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 arch/ia64/include/asm/io.h | 6 +++---
 arch/ia64/mm/ioremap.c     | 4 ++--
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/arch/ia64/include/asm/io.h b/arch/ia64/include/asm/io.h
index a511d62d447a..febd2c6ea0b4 100644
--- a/arch/ia64/include/asm/io.h
+++ b/arch/ia64/include/asm/io.h
@@ -412,16 +412,16 @@ __writeq (unsigned long val, volatile void __iomem *addr)
 # ifdef __KERNEL__
 
 extern void __iomem * ioremap(unsigned long offset, unsigned long size);
-extern void __iomem * ioremap_nocache (unsigned long offset, unsigned long size);
+extern void __iomem * ioremap_uc(unsigned long offset, unsigned long size);
 extern void iounmap (volatile void __iomem *addr);
 static inline void __iomem * ioremap_cache (unsigned long phys_addr, unsigned long size)
 {
 	return ioremap(phys_addr, size);
 }
 #define ioremap ioremap
-#define ioremap_nocache ioremap_nocache
+#define ioremap_nocache ioremap
 #define ioremap_cache ioremap_cache
-#define ioremap_uc ioremap_nocache
+#define ioremap_uc ioremap_uc
 #define iounmap iounmap
 
 /*
diff --git a/arch/ia64/mm/ioremap.c b/arch/ia64/mm/ioremap.c
index 0c0de2c4ec69..a09cfa064536 100644
--- a/arch/ia64/mm/ioremap.c
+++ b/arch/ia64/mm/ioremap.c
@@ -99,14 +99,14 @@ ioremap (unsigned long phys_addr, unsigned long size)
 EXPORT_SYMBOL(ioremap);
 
 void __iomem *
-ioremap_nocache (unsigned long phys_addr, unsigned long size)
+ioremap_uc(unsigned long phys_addr, unsigned long size)
 {
 	if (kern_mem_attribute(phys_addr, size) & EFI_MEMORY_WB)
 		return NULL;
 
 	return __ioremap_uc(phys_addr);
 }
-EXPORT_SYMBOL(ioremap_nocache);
+EXPORT_SYMBOL(ioremap_uc);
 
 void
 early_iounmap (volatile void __iomem *addr, unsigned long size)
-- 
2.20.1


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  parent reply	other threads:[~2019-08-17  7:48 UTC|newest]

Thread overview: 55+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-17  7:32 generic ioremap (and lots of cleanups) Christoph Hellwig
2019-08-17  7:32 ` [PATCH 01/26] mtd/maps/pxa2xx: use ioremap_cache insted of ioremap_cached Christoph Hellwig
2019-08-17  7:32 ` [PATCH 02/26] arm, unicore32: remove ioremap_cached Christoph Hellwig
2019-08-17  7:32 ` [PATCH 03/26] m68k, microblaze: remove ioremap_fullcache Christoph Hellwig
2019-08-19  8:50   ` Geert Uytterhoeven
2019-09-02 14:16   ` Michal Simek
2019-08-17  7:32 ` [PATCH 04/26] mips: remove ioremap_cachable Christoph Hellwig
2019-08-19 20:57   ` Paul Burton
2019-08-30 16:06     ` Christoph Hellwig
2019-09-03  8:57   ` Paul Burton
2019-08-17  7:32 ` [PATCH 05/26] openrisc: map as uncached in ioremap Christoph Hellwig
2019-08-23 13:55   ` Stafford Horne
2019-08-30 16:07     ` Christoph Hellwig
2019-08-30 21:45       ` Stafford Horne
2019-08-17  7:32 ` Christoph Hellwig [this message]
2019-08-17 16:00   ` [PATCH 06/26] ia64: rename ioremap_nocache to ioremap_uc Sergei Shtylyov
2019-08-17  7:32 ` [PATCH 07/26] hexagon: clean up ioremap Christoph Hellwig
2019-08-17  7:32 ` [PATCH 08/26] m68k: simplify ioremap_nocache Christoph Hellwig
2019-08-19  8:56   ` Geert Uytterhoeven
2019-08-19  9:18     ` Christoph Hellwig
2019-08-30 16:06     ` Christoph Hellwig
2019-09-02  7:53       ` Geert Uytterhoeven
2019-08-17  7:32 ` [PATCH 09/26] alpha: remove the unused __ioremap wrapper Christoph Hellwig
2019-08-17  7:32 ` [PATCH 10/26] nios2: remove __ioremap Christoph Hellwig
2019-08-17  7:32 ` [PATCH 11/26] parisc: " Christoph Hellwig
2019-08-17  7:32 ` [PATCH 12/26] x86: clean up ioremap Christoph Hellwig
2019-08-17 10:34   ` Ingo Molnar
2019-08-30 16:04     ` Christoph Hellwig
2019-08-17  7:32 ` [PATCH 13/26] xtensa: " Christoph Hellwig
2019-08-17  7:32 ` [PATCH 14/26] asm-generic: don't provide __ioremap Christoph Hellwig
2019-08-17 20:58   ` Paul Walmsley
2019-08-17 21:27     ` Paul Walmsley
     [not found]     ` <20190830160404.GA26887@lst.de>
2019-08-30 19:47       ` Arnd Bergmann
2019-09-02  8:01         ` Christoph Hellwig
2019-08-17  7:32 ` [PATCH 15/26] asm-generic: ioremap_uc should behave the same with and without MMU Christoph Hellwig
2019-08-17 21:07   ` Paul Walmsley
2019-08-17  7:32 ` [PATCH 16/26] asm-generic: don't provide ioremap for CONFIG_MMU Christoph Hellwig
2019-08-17 21:15   ` Paul Walmsley
2019-08-17  7:32 ` [PATCH 17/26] arch: rely on asm-generic/io.h for default ioremap_* definitions Christoph Hellwig
2019-08-17 21:13   ` Paul Walmsley
2019-08-17  7:32 ` [PATCH 18/26] m68k: rename __iounmap and mark it static Christoph Hellwig
2019-08-19  9:00   ` Geert Uytterhoeven
2019-08-17  7:32 ` [PATCH 19/26] arm64: remove __iounmap Christoph Hellwig
2019-08-19  7:36   ` Will Deacon
2019-08-30 16:05     ` Christoph Hellwig
2019-08-31 16:29       ` Will Deacon
2019-08-17  7:32 ` [PATCH 20/26] hexagon: " Christoph Hellwig
2019-08-17  7:32 ` [PATCH 21/26] nios2: " Christoph Hellwig
2019-08-17  7:32 ` [PATCH 22/26] sh: " Christoph Hellwig
2019-08-17  7:32 ` [PATCH 23/26] lib: provide a simple generic ioremap implementation Christoph Hellwig
2019-08-17  7:32 ` [PATCH 24/26] riscv: use the generic ioremap code Christoph Hellwig
2019-08-17 21:22   ` Paul Walmsley
2019-09-01  8:02     ` Christoph Hellwig
2019-08-17  7:32 ` [PATCH 25/26] csky: use generic ioremap Christoph Hellwig
2019-08-17  7:32 ` [PATCH 26/26] nds32: " Christoph Hellwig

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