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authorJeremy Fitzhardinge <jeremy@goop.org>2008-12-16 12:17:35 -0800
committerIngo Molnar <mingo@elte.hu>2008-12-17 18:58:18 +0100
commit8ce7996009bab7b2d23e7af7ad831fed7eb6faa1 (patch)
tree7e9869546a654f13379fd1f49f95c77aa0449c12 /arch/x86
parent2e5b2b86b65fe36bb8401e5608eb0b7603aa1cab (diff)
x86: add swiotlb allocation functions
Add x86-specific swiotlb allocation functions. These are purely default for the moment. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/kernel/pci-swiotlb_64.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/x86/kernel/pci-swiotlb_64.c b/arch/x86/kernel/pci-swiotlb_64.c
index 3c539d111ab..f47a097a135 100644
--- a/arch/x86/kernel/pci-swiotlb_64.c
+++ b/arch/x86/kernel/pci-swiotlb_64.c
@@ -3,6 +3,8 @@
#include <linux/pci.h>
#include <linux/cache.h>
#include <linux/module.h>
+#include <linux/swiotlb.h>
+#include <linux/bootmem.h>
#include <linux/dma-mapping.h>
#include <asm/iommu.h>
@@ -11,6 +13,16 @@
int swiotlb __read_mostly;
+void *swiotlb_alloc_boot(size_t size, unsigned long nslabs)
+{
+ return alloc_bootmem_low_pages(size);
+}
+
+void *swiotlb_alloc(unsigned order, unsigned long nslabs)
+{
+ return (void *)__get_free_pages(GFP_DMA | __GFP_NOWARN, order);
+}
+
static dma_addr_t
swiotlb_map_single_phys(struct device *hwdev, phys_addr_t paddr, size_t size,
int direction)