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authorRussell King <rmk+kernel@arm.linux.org.uk>2011-05-11 15:39:00 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2011-05-12 08:36:53 +0100
commitbe20902ba67de70b38c995903321f4152dee57b7 (patch)
tree86f27d4d90b7408d421ce246527431e58a836bf3 /arch/arm/mach-pxa
parent2fb3ec5c9503ba8874e24170de2b40e8f1a58370 (diff)
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.c27
-rw-r--r--arch/arm/mach-pxa/include/mach/memory.h7
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