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add dma_get_ops to struct ia64_machine_vector
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This adds dma_get_ops hook to struct ia64_machine_vector. We use
dma_get_ops() in arch/ia64/kernel/dma-mapping.c, which simply returns
the global dma_ops. This is for removing hwsw_dma_ops.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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FUJITA Tomonori authored and Ingo Molnar committed Jan 6, 2009
1 parent cdc28d5 commit c190ab0
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Showing 4 changed files with 39 additions and 18 deletions.
41 changes: 24 additions & 17 deletions arch/ia64/include/asm/dma-mapping.h
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Original file line number Diff line number Diff line change
Expand Up @@ -68,13 +68,15 @@ extern void set_iommu_machvec(void);
static inline void *dma_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *daddr, gfp_t gfp)
{
return dma_ops->alloc_coherent(dev, size, daddr, gfp | GFP_DMA);
struct dma_mapping_ops *ops = platform_dma_get_ops(dev);
return ops->alloc_coherent(dev, size, daddr, gfp | GFP_DMA);
}

static inline void dma_free_coherent(struct device *dev, size_t size,
void *caddr, dma_addr_t daddr)
{
dma_ops->free_coherent(dev, size, caddr, daddr);
struct dma_mapping_ops *ops = platform_dma_get_ops(dev);
ops->free_coherent(dev, size, caddr, daddr);
}

#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
Expand All @@ -85,15 +87,17 @@ static inline dma_addr_t dma_map_single_attrs(struct device *dev,
enum dma_data_direction dir,
struct dma_attrs *attrs)
{
return dma_ops->map_single_attrs(dev, caddr, size, dir, attrs);
struct dma_mapping_ops *ops = platform_dma_get_ops(dev);
return ops->map_single_attrs(dev, caddr, size, dir, attrs);
}

static inline void dma_unmap_single_attrs(struct device *dev, dma_addr_t daddr,
size_t size,
enum dma_data_direction dir,
struct dma_attrs *attrs)
{
dma_ops->unmap_single_attrs(dev, daddr, size, dir, attrs);
struct dma_mapping_ops *ops = platform_dma_get_ops(dev);
ops->unmap_single_attrs(dev, daddr, size, dir, attrs);
}

#define dma_map_single(d, a, s, r) dma_map_single_attrs(d, a, s, r, NULL)
Expand All @@ -103,15 +107,17 @@ static inline int dma_map_sg_attrs(struct device *dev, struct scatterlist *sgl,
int nents, enum dma_data_direction dir,
struct dma_attrs *attrs)
{
return dma_ops->map_sg_attrs(dev, sgl, nents, dir, attrs);
struct dma_mapping_ops *ops = platform_dma_get_ops(dev);
return ops->map_sg_attrs(dev, sgl, nents, dir, attrs);
}

static inline void dma_unmap_sg_attrs(struct device *dev,
struct scatterlist *sgl, int nents,
enum dma_data_direction dir,
struct dma_attrs *attrs)
{
dma_ops->unmap_sg_attrs(dev, sgl, nents, dir, attrs);
struct dma_mapping_ops *ops = platform_dma_get_ops(dev);
ops->unmap_sg_attrs(dev, sgl, nents, dir, attrs);
}

#define dma_map_sg(d, s, n, r) dma_map_sg_attrs(d, s, n, r, NULL)
Expand All @@ -121,35 +127,40 @@ static inline void dma_sync_single_for_cpu(struct device *dev, dma_addr_t daddr,
size_t size,
enum dma_data_direction dir)
{
dma_ops->sync_single_for_cpu(dev, daddr, size, dir);
struct dma_mapping_ops *ops = platform_dma_get_ops(dev);
ops->sync_single_for_cpu(dev, daddr, size, dir);
}

static inline void dma_sync_sg_for_cpu(struct device *dev,
struct scatterlist *sgl,
int nents, enum dma_data_direction dir)
{
dma_ops->sync_sg_for_cpu(dev, sgl, nents, dir);
struct dma_mapping_ops *ops = platform_dma_get_ops(dev);
ops->sync_sg_for_cpu(dev, sgl, nents, dir);
}

static inline void dma_sync_single_for_device(struct device *dev,
dma_addr_t daddr,
size_t size,
enum dma_data_direction dir)
{
dma_ops->sync_single_for_device(dev, daddr, size, dir);
struct dma_mapping_ops *ops = platform_dma_get_ops(dev);
ops->sync_single_for_device(dev, daddr, size, dir);
}

static inline void dma_sync_sg_for_device(struct device *dev,
struct scatterlist *sgl,
int nents,
enum dma_data_direction dir)
{
dma_ops->sync_sg_for_device(dev, sgl, nents, dir);
struct dma_mapping_ops *ops = platform_dma_get_ops(dev);
ops->sync_sg_for_device(dev, sgl, nents, dir);
}

static inline int dma_mapping_error(struct device *dev, dma_addr_t daddr)
{
return dma_ops->mapping_error(dev, daddr);
struct dma_mapping_ops *ops = platform_dma_get_ops(dev);
return ops->mapping_error(dev, daddr);
}

#define dma_map_page(dev, pg, off, size, dir) \
Expand All @@ -169,7 +180,8 @@ static inline int dma_mapping_error(struct device *dev, dma_addr_t daddr)

static inline int dma_supported(struct device *dev, u64 mask)
{
return dma_ops->dma_supported_op(dev, mask);
struct dma_mapping_ops *ops = platform_dma_get_ops(dev);
return ops->dma_supported_op(dev, mask);
}

static inline int
Expand All @@ -196,9 +208,4 @@ dma_cache_sync (struct device *dev, void *vaddr, size_t size,

#define dma_is_consistent(d, h) (1) /* all we do is coherent memory... */

static inline struct dma_mapping_ops *get_dma_ops(struct device *dev)
{
return dma_ops;
}

#endif /* _ASM_IA64_DMA_MAPPING_H */
8 changes: 8 additions & 0 deletions arch/ia64/include/asm/machvec.h
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Original file line number Diff line number Diff line change
Expand Up @@ -45,6 +45,7 @@ typedef void ia64_mv_kernel_launch_event_t(void);

/* DMA-mapping interface: */
typedef void ia64_mv_dma_init (void);
typedef struct dma_mapping_ops *ia64_mv_dma_get_ops(struct device *);

/*
* WARNING: The legacy I/O space is _architected_. Platforms are
Expand Down Expand Up @@ -130,6 +131,7 @@ extern void machvec_tlb_migrate_finish (struct mm_struct *);
# define platform_global_tlb_purge ia64_mv.global_tlb_purge
# define platform_tlb_migrate_finish ia64_mv.tlb_migrate_finish
# define platform_dma_init ia64_mv.dma_init
# define platform_dma_get_ops ia64_mv.dma_get_ops
# define platform_irq_to_vector ia64_mv.irq_to_vector
# define platform_local_vector_to_irq ia64_mv.local_vector_to_irq
# define platform_pci_get_legacy_mem ia64_mv.pci_get_legacy_mem
Expand Down Expand Up @@ -172,6 +174,7 @@ struct ia64_machine_vector {
ia64_mv_global_tlb_purge_t *global_tlb_purge;
ia64_mv_tlb_migrate_finish_t *tlb_migrate_finish;
ia64_mv_dma_init *dma_init;
ia64_mv_dma_get_ops *dma_get_ops;
ia64_mv_irq_to_vector *irq_to_vector;
ia64_mv_local_vector_to_irq *local_vector_to_irq;
ia64_mv_pci_get_legacy_mem_t *pci_get_legacy_mem;
Expand Down Expand Up @@ -210,6 +213,7 @@ struct ia64_machine_vector {
platform_global_tlb_purge, \
platform_tlb_migrate_finish, \
platform_dma_init, \
platform_dma_get_ops, \
platform_irq_to_vector, \
platform_local_vector_to_irq, \
platform_pci_get_legacy_mem, \
Expand Down Expand Up @@ -246,6 +250,7 @@ extern void machvec_init_from_cmdline(const char *cmdline);
# endif /* CONFIG_IA64_GENERIC */

extern void swiotlb_dma_init(void);
extern struct dma_mapping_ops *dma_get_ops(struct device *);

/*
* Define default versions so we can extend machvec for new platforms without having
Expand Down Expand Up @@ -279,6 +284,9 @@ extern void swiotlb_dma_init(void);
#ifndef platform_dma_init
# define platform_dma_init swiotlb_dma_init
#endif
#ifndef platform_dma_get_ops
# define platform_dma_get_ops dma_get_ops
#endif
#ifndef platform_irq_to_vector
# define platform_irq_to_vector __ia64_irq_to_vector
#endif
Expand Down
6 changes: 6 additions & 0 deletions arch/ia64/kernel/dma-mapping.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2,3 +2,9 @@

struct dma_mapping_ops *dma_ops;
EXPORT_SYMBOL(dma_ops);

struct dma_mapping_ops *dma_get_ops(struct device *dev)
{
return dma_ops;
}
EXPORT_SYMBOL(dma_get_ops);
2 changes: 1 addition & 1 deletion arch/ia64/kernel/pci-dma.c
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Original file line number Diff line number Diff line change
Expand Up @@ -81,7 +81,7 @@ iommu_dma_init(void)

int iommu_dma_supported(struct device *dev, u64 mask)
{
struct dma_mapping_ops *ops = get_dma_ops(dev);
struct dma_mapping_ops *ops = platform_dma_get_ops(dev);

if (ops->dma_supported_op)
return ops->dma_supported_op(dev, mask);
Expand Down

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