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yaml
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r: 138884
b: refs/heads/master
c: c7b3aee
h: refs/heads/master
v: v3
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FUJITA Tomonori authored and Ingo Molnar committed Jan 6, 2009
1 parent 5f53592 commit 5f1b2e1
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Showing 3 changed files with 15 additions and 172 deletions.
2 changes: 1 addition & 1 deletion [refs]
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---
refs/heads/master: c190ab0b2a5fb5cc97576c5f04f4419b6cf8dc8e
refs/heads/master: c7b3aee8af5bd0d73d5779a4ad82a1496771d3ef
183 changes: 12 additions & 171 deletions trunk/arch/ia64/hp/common/hwsw_iommu.c
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Expand Up @@ -17,55 +17,33 @@
#include <linux/swiotlb.h>
#include <asm/machvec.h>

extern struct dma_mapping_ops sba_dma_ops, swiotlb_dma_ops;

/* swiotlb declarations & definitions: */
extern int swiotlb_late_init_with_default_size (size_t size);

/* hwiommu declarations & definitions: */

extern void *sba_alloc_coherent(struct device *, size_t, dma_addr_t *, gfp_t);
extern void sba_free_coherent (struct device *, size_t, void *, dma_addr_t);
extern dma_addr_t sba_map_single_attrs(struct device *, void *, size_t, int,
struct dma_attrs *);
extern void sba_unmap_single_attrs(struct device *, dma_addr_t, size_t, int,
struct dma_attrs *);
extern int sba_map_sg_attrs(struct device *, struct scatterlist *, int, int,
struct dma_attrs *);
extern void sba_unmap_sg_attrs(struct device *, struct scatterlist *, int, int,
struct dma_attrs *);
extern int sba_dma_supported (struct device *, u64);
extern int sba_dma_mapping_error(struct device *, dma_addr_t);

#define hwiommu_alloc_coherent sba_alloc_coherent
#define hwiommu_free_coherent sba_free_coherent
#define hwiommu_map_single_attrs sba_map_single_attrs
#define hwiommu_unmap_single_attrs sba_unmap_single_attrs
#define hwiommu_map_sg_attrs sba_map_sg_attrs
#define hwiommu_unmap_sg_attrs sba_unmap_sg_attrs
#define hwiommu_dma_supported sba_dma_supported
#define hwiommu_dma_mapping_error sba_dma_mapping_error
#define hwiommu_sync_single_for_cpu machvec_dma_sync_single
#define hwiommu_sync_sg_for_cpu machvec_dma_sync_sg
#define hwiommu_sync_single_for_device machvec_dma_sync_single
#define hwiommu_sync_sg_for_device machvec_dma_sync_sg


/*
* Note: we need to make the determination of whether or not to use
* the sw I/O TLB based purely on the device structure. Anything else
* would be unreliable or would be too intrusive.
*/
static inline int
use_swiotlb (struct device *dev)
static inline int use_swiotlb(struct device *dev)
{
return dev && dev->dma_mask && !hwiommu_dma_supported(dev, *dev->dma_mask);
return dev && dev->dma_mask &&
!sba_dma_ops.dma_supported_op(dev, *dev->dma_mask);
}

struct dma_mapping_ops hwsw_dma_ops;
struct dma_mapping_ops *hwsw_dma_get_ops(struct device *dev)
{
if (use_swiotlb(dev))
return &swiotlb_dma_ops;
return &sba_dma_ops;
}
EXPORT_SYMBOL(hwsw_dma_get_ops);

void __init
hwsw_init (void)
{
dma_ops = &hwsw_dma_ops;
/* default to a smallish 2MB sw I/O TLB */
if (swiotlb_late_init_with_default_size (2 * (1<<20)) != 0) {
#ifdef CONFIG_IA64_GENERIC
Expand All @@ -78,140 +56,3 @@ hwsw_init (void)
#endif
}
}

void *
hwsw_alloc_coherent (struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t flags)
{
if (use_swiotlb(dev))
return swiotlb_alloc_coherent(dev, size, dma_handle, flags);
else
return hwiommu_alloc_coherent(dev, size, dma_handle, flags);
}

void
hwsw_free_coherent (struct device *dev, size_t size, void *vaddr, dma_addr_t dma_handle)
{
if (use_swiotlb(dev))
swiotlb_free_coherent(dev, size, vaddr, dma_handle);
else
hwiommu_free_coherent(dev, size, vaddr, dma_handle);
}

dma_addr_t
hwsw_map_single_attrs(struct device *dev, void *addr, size_t size, int dir,
struct dma_attrs *attrs)
{
if (use_swiotlb(dev))
return swiotlb_map_single_attrs(dev, addr, size, dir, attrs);
else
return hwiommu_map_single_attrs(dev, addr, size, dir, attrs);
}
EXPORT_SYMBOL(hwsw_map_single_attrs);

void
hwsw_unmap_single_attrs(struct device *dev, dma_addr_t iova, size_t size,
int dir, struct dma_attrs *attrs)
{
if (use_swiotlb(dev))
return swiotlb_unmap_single_attrs(dev, iova, size, dir, attrs);
else
return hwiommu_unmap_single_attrs(dev, iova, size, dir, attrs);
}
EXPORT_SYMBOL(hwsw_unmap_single_attrs);

int
hwsw_map_sg_attrs(struct device *dev, struct scatterlist *sglist, int nents,
int dir, struct dma_attrs *attrs)
{
if (use_swiotlb(dev))
return swiotlb_map_sg_attrs(dev, sglist, nents, dir, attrs);
else
return hwiommu_map_sg_attrs(dev, sglist, nents, dir, attrs);
}
EXPORT_SYMBOL(hwsw_map_sg_attrs);

void
hwsw_unmap_sg_attrs(struct device *dev, struct scatterlist *sglist, int nents,
int dir, struct dma_attrs *attrs)
{
if (use_swiotlb(dev))
return swiotlb_unmap_sg_attrs(dev, sglist, nents, dir, attrs);
else
return hwiommu_unmap_sg_attrs(dev, sglist, nents, dir, attrs);
}
EXPORT_SYMBOL(hwsw_unmap_sg_attrs);

void
hwsw_sync_single_for_cpu (struct device *dev, dma_addr_t addr, size_t size, int dir)
{
if (use_swiotlb(dev))
swiotlb_sync_single_for_cpu(dev, addr, size, dir);
else
hwiommu_sync_single_for_cpu(dev, addr, size, dir);
}

void
hwsw_sync_sg_for_cpu (struct device *dev, struct scatterlist *sg, int nelems, int dir)
{
if (use_swiotlb(dev))
swiotlb_sync_sg_for_cpu(dev, sg, nelems, dir);
else
hwiommu_sync_sg_for_cpu(dev, sg, nelems, dir);
}

void
hwsw_sync_single_for_device (struct device *dev, dma_addr_t addr, size_t size, int dir)
{
if (use_swiotlb(dev))
swiotlb_sync_single_for_device(dev, addr, size, dir);
else
hwiommu_sync_single_for_device(dev, addr, size, dir);
}

void
hwsw_sync_sg_for_device (struct device *dev, struct scatterlist *sg, int nelems, int dir)
{
if (use_swiotlb(dev))
swiotlb_sync_sg_for_device(dev, sg, nelems, dir);
else
hwiommu_sync_sg_for_device(dev, sg, nelems, dir);
}

int
hwsw_dma_supported (struct device *dev, u64 mask)
{
if (hwiommu_dma_supported(dev, mask))
return 1;
return swiotlb_dma_supported(dev, mask);
}

int
hwsw_dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
{
return hwiommu_dma_mapping_error(dev, dma_addr) ||
swiotlb_dma_mapping_error(dev, dma_addr);
}

EXPORT_SYMBOL(hwsw_dma_mapping_error);
EXPORT_SYMBOL(hwsw_dma_supported);
EXPORT_SYMBOL(hwsw_alloc_coherent);
EXPORT_SYMBOL(hwsw_free_coherent);
EXPORT_SYMBOL(hwsw_sync_single_for_cpu);
EXPORT_SYMBOL(hwsw_sync_single_for_device);
EXPORT_SYMBOL(hwsw_sync_sg_for_cpu);
EXPORT_SYMBOL(hwsw_sync_sg_for_device);

struct dma_mapping_ops hwsw_dma_ops = {
.alloc_coherent = hwsw_alloc_coherent,
.free_coherent = hwsw_free_coherent,
.map_single_attrs = hwsw_map_single_attrs,
.unmap_single_attrs = hwsw_unmap_single_attrs,
.map_sg_attrs = hwsw_map_sg_attrs,
.unmap_sg_attrs = hwsw_unmap_sg_attrs,
.sync_single_for_cpu = hwsw_sync_single_for_cpu,
.sync_sg_for_cpu = hwsw_sync_sg_for_cpu,
.sync_single_for_device = hwsw_sync_single_for_device,
.sync_sg_for_device = hwsw_sync_sg_for_device,
.dma_supported_op = hwsw_dma_supported,
.mapping_error = hwsw_dma_mapping_error,
};
2 changes: 2 additions & 0 deletions trunk/arch/ia64/include/asm/machvec_hpzx1_swiotlb.h
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Expand Up @@ -2,6 +2,7 @@
#define _ASM_IA64_MACHVEC_HPZX1_SWIOTLB_h

extern ia64_mv_setup_t dig_setup;
extern ia64_mv_dma_get_ops hwsw_dma_get_ops;

/*
* This stuff has dual use!
Expand All @@ -13,5 +14,6 @@ extern ia64_mv_setup_t dig_setup;
#define platform_name "hpzx1_swiotlb"
#define platform_setup dig_setup
#define platform_dma_init machvec_noop
#define platform_dma_get_ops hwsw_dma_get_ops

#endif /* _ASM_IA64_MACHVEC_HPZX1_SWIOTLB_h */

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