Commit 0016fdee authored by Ian Campbell's avatar Ian Campbell Committed by Ingo Molnar
Browse files

swiotlb: move some definitions to header 



Impact: cleanup

Signed-off-by: default avatarIan Campbell <ian.campbell@citrix.com>
Signed-off-by: default avatarJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 8c5df16b

include/linux/swiotlb.h

+14 −0
Original line number Diff line number Diff line
@@ -7,6 +7,20 @@ struct device; 
struct dma_attrs;

struct scatterlist;



/*

 * Maximum allowable number of contiguous slabs to map,

 * must be a power of 2.  What is the appropriate value ?

 * The complexity of {map,unmap}_single is linearly dependent on this value.

 */

#define IO_TLB_SEGSIZE	128





/*

 * log of the size of each IO TLB slab.  The number of slabs is command line

 * controllable.

 */

#define IO_TLB_SHIFT 11



extern void

swiotlb_init(void);

lib/swiotlb.c

+1 −13
Original line number Diff line number Diff line
@@ -23,6 +23,7 @@ 
#include <linux/spinlock.h>

#include <linux/swiotlb.h>

#include <linux/string.h>

#include <linux/swiotlb.h>

#include <linux/types.h>

#include <linux/ctype.h>
@@ -40,19 +41,6 @@ 
#define SG_ENT_VIRT_ADDRESS(sg)	(sg_virt((sg)))

#define SG_ENT_PHYS_ADDRESS(sg)	virt_to_bus(SG_ENT_VIRT_ADDRESS(sg))



/*

 * Maximum allowable number of contiguous slabs to map,

 * must be a power of 2.  What is the appropriate value ?

 * The complexity of {map,unmap}_single is linearly dependent on this value.

 */

#define IO_TLB_SEGSIZE	128



/*

 * log of the size of each IO TLB slab.  The number of slabs is command line

 * controllable.

 */

#define IO_TLB_SHIFT 11



#define SLABS_PER_PAGE (1 << (PAGE_SHIFT - IO_TLB_SHIFT))



/*