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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-05-11 15:39:00 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-05-12 08:36:53 +0100 |
| commit | be20902ba67de70b38c995903321f4152dee57b7 (patch) | |
| tree | 86f27d4d90b7408d421ce246527431e58a836bf3 /arch/arm/mach-pxa | |
| parent | 2fb3ec5c9503ba8874e24170de2b40e8f1a58370 (diff) | |
| download | linux-3.10-be20902ba67de70b38c995903321f4152dee57b7.tar.gz linux-3.10-be20902ba67de70b38c995903321f4152dee57b7.tar.bz2 linux-3.10-be20902ba67de70b38c995903321f4152dee57b7.zip | |
ARM: use ARM_DMA_ZONE_SIZE to adjust the zone sizes
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>
Diffstat (limited to 'arch/arm/mach-pxa')
| -rw-r--r-- | arch/arm/mach-pxa/cm-x2xx-pci.c | 27 | ||||
| -rw-r--r-- | arch/arm/mach-pxa/include/mach/memory.h | 7 |
2 files changed, 1 insertions, 33 deletions
diff --git a/arch/arm/mach-pxa/cm-x2xx-pci.c b/arch/arm/mach-pxa/cm-x2xx-pci.c index 8b1a30959fa..1afc0fb7d6d 100644 --- a/arch/arm/mach-pxa/cm-x2xx-pci.c +++ b/arch/arm/mach-pxa/cm-x2xx-pci.c @@ -29,33 +29,6 @@ unsigned long it8152_base_address; static int cmx2xx_it8152_irq_gpio; -/* - * Only first 64MB of memory can be accessed via PCI. - * We use GFP_DMA to allocate safe buffers to do map/unmap. - * This is really ugly and we need a better way of specifying - * DMA-capable regions of memory. - */ -void __init cmx2xx_pci_adjust_zones(unsigned long *zone_size, - unsigned long *zhole_size) -{ - unsigned int sz = SZ_64M >> PAGE_SHIFT; - - if (machine_is_armcore()) { - pr_info("Adjusting zones for CM-X2XX\n"); - - /* - * Only adjust if > 64M on current system - */ - if (zone_size[0] <= sz) - return; - - zone_size[1] = zone_size[0] - sz; - zone_size[0] = sz; - zhole_size[1] = zhole_size[0]; - zhole_size[0] = 0; - } -} - static void cmx2xx_it8152_irq_demux(unsigned int irq, struct irq_desc *desc) { /* clear our parent irq */ diff --git a/arch/arm/mach-pxa/include/mach/memory.h b/arch/arm/mach-pxa/include/mach/memory.h index 57a0b689b4d..07734f37f8f 100644 --- a/arch/arm/mach-pxa/include/mach/memory.h +++ b/arch/arm/mach-pxa/include/mach/memory.h @@ -17,12 +17,7 @@ */ #define PLAT_PHYS_OFFSET UL(0xa0000000) -#if !defined(__ASSEMBLY__) && defined(CONFIG_MACH_ARMCORE) && defined(CONFIG_PCI) -void cmx2xx_pci_adjust_zones(unsigned long *size, unsigned long *holes); - -#define arch_adjust_zones(size, holes) \ - cmx2xx_pci_adjust_zones(size, holes) - +#if defined(CONFIG_MACH_ARMCORE) && defined(CONFIG_PCI) #define ARM_DMA_ZONE_SIZE SZ_64M #endif |