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Commit 8ce79960 authored by Jeremy Fitzhardinge's avatar Jeremy Fitzhardinge Committed by Ingo Molnar
Browse files

x86: add swiotlb allocation functions 



Add x86-specific swiotlb allocation functions.  These are purely
default for the moment.

Signed-off-by: default avatarJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 2e5b2b86

arch/x86/kernel/pci-swiotlb_64.c

+12 −0
Original line number Diff line number Diff line
@@ -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)