From: Catalin Marinas <catalin.marinas@arm.com>
Date: Tue, 7 Dec 2010 15:56:29 +0000 (+0100)
Subject: ARM: 6528/1: Use CTR for the I-cache line size on ARMv7
X-Git-Tag: v2.6.37-rc6~12^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=da30e0ac0f9a521f0cfec8145ddd1ad131f66d61;p=pandora-kernel.git

ARM: 6528/1: Use CTR for the I-cache line size on ARMv7

The current implementation of the v7_coherent_*_range function assumes
that the D and I cache lines have the same size, which is incorrect
architecturally. This patch adds the icache_line_size macro which reads
the CTR register. The main loop in v7_coherent_*_range is split in two
independent loops or the D and I caches. This also has the performance
advantage that the DSB is moved outside the main loop.

Reported-by: Kevin Sapp <ksapp@quicinc.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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