From: arnd@arndb.de (Arnd Bergmann)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 1/3] ARM: Introduce *_relaxed() I/O accessors
Date: Fri, 9 Jul 2010 18:08:01 +0200 [thread overview]
Message-ID: <201007091808.01536.arnd@arndb.de> (raw)
In-Reply-To: <20100709110801.11333.22995.stgit@e102109-lin.cambridge.arm.com>
On Friday 09 July 2010, Catalin Marinas wrote:
> This patch introduces readl*_relaxed()/write*_relaxed() as the main I/O
> accessors (when __mem_pci is defined). The standard read*()/write*()
> macros are now based on the relaxed accessors.
Are these new macros valid for both PCI and non-PCI mmio addresses?
The way I understand it, the regular readl/writel family is only
valid for __iomem addresses in PCI BARs, while anything else
has to go through either ioread32/iowrite32 or something arch
specific.
Does this mean we also need an ioread32_releaxed etc?
Arnd
next prev parent reply other threads:[~2010-07-09 16:08 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-09 11:07 [PATCH v2 0/3] Ordered I/O accessors Catalin Marinas
2010-07-09 11:08 ` [PATCH v2 1/3] ARM: Introduce *_relaxed() " Catalin Marinas
2010-07-09 16:08 ` Arnd Bergmann [this message]
2010-07-09 16:53 ` Catalin Marinas
2010-07-09 17:17 ` Arnd Bergmann
2010-07-09 18:24 ` Russell King - ARM Linux
2010-07-09 19:30 ` Arnd Bergmann
2010-07-09 22:31 ` Catalin Marinas
2010-07-12 11:39 ` Arnd Bergmann
2010-07-12 11:50 ` Jamie Lokier
2010-07-12 11:53 ` Catalin Marinas
2010-07-12 12:46 ` Jamie Lokier
2010-07-13 15:21 ` Catalin Marinas
2010-07-12 12:00 ` Catalin Marinas
2010-07-09 11:08 ` [PATCH v2 2/3] ARM: Convert L2x0 to use the IO relaxed operations for cache sync Catalin Marinas
2010-07-09 11:08 ` [PATCH v2 3/3] ARM: Add barriers to the I/O accessors if ARM_DMA_MEM_BUFFERABLE Catalin Marinas
2010-07-09 11:41 ` Catalin Marinas
2010-07-09 12:16 ` Russell King - ARM Linux
2010-07-09 13:02 ` [PATCH v2 3/3] ARM: Add barriers to the I/O accessors ifARM_DMA_MEM_BUFFERABLE Catalin Marinas
2010-07-09 14:21 ` [PATCH v2 3/3] ARM: Add barriers to the I/O accessorsifARM_DMA_MEM_BUFFERABLE Catalin Marinas
2010-07-09 14:34 ` Russell King - ARM Linux
2010-07-09 15:02 ` [PATCH v2 3/3] ARM: Add barriers to the I/OaccessorsifARM_DMA_MEM_BUFFERABLE Catalin Marinas
2010-07-09 11:29 ` [PATCH v2 0/3] Ordered I/O accessors Russell King - ARM Linux
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