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ARM: use ARM_DMA_ZONE_SIZE to adjust the zone sizes

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Rather than each platform providing its own function to adjust the
zone sizes, use the new ARM_DMA_ZONE_SIZE definition to perform this
adjustment.  This ensures that the actual DMA zone size and the
ISA_DMA_THRESHOLD/MAX_DMA_ADDRESS definitions are consistent with
each other, and moves this complexity out of the platform code.

Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King
2011-05-11 15:39:00 +01:00
parent 2fb3ec5c95
commit be20902ba6
12 changed files with 25 additions and 144 deletions
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6
arch/arm/include/asm/memory.h
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@@ -215,12 +215,6 @@ static inline unsigned long __phys_to_virt(unsigned long x)
#define ISA_DMA_THRESHOLD (PHYS_OFFSET + ARM_DMA_ZONE_SIZE - 1)
#endif
#ifndef arch_adjust_zones
#define arch_adjust_zones(size,holes) do { } while (0)
#elif !defined(CONFIG_ZONE_DMA)
#error "custom arch_adjust_zones() requires CONFIG_ZONE_DMA"
#endif
/*
* PFNs are used to describe any physical page; this means
* PFN 0 == physical address 0.