Further cleanup of the sparc64 busdma implementation:

- Move prototypes for sparc64-specific helper functions from bus.h to
  bus_private.h
- Move the method pointers from struct bus_dma_tag into a separate
  structure; this saves some memory, and allows to use a single method
  table for each busdma backend, so that the bus drivers need no longer
  be changed if the methods tables need to be modified.
- Remove the hierarchical tag method lookup. It was never really useful,
  since the layering is fixed, and the current implementations do not
  need to call into parent implementations anyway. Each tag inherits
  its method table pointer and cookie from the parent (or the root tag)
  now, and the method wrapper macros directly use the method table
  of the tag.
- Add a method table to the non-IOMMU backend, remove unnecessary
  prototypes, remove the extra parent tag argument.
- Rename sparc64_dmamem_alloc_map() and sparc64_dmamem_free_map() to
  sparc64_dma_alloc_map() and sparc64_dma_free_map(), move them to a
  better place and use them for all map allocations and deallocations.
- Add a method table to the iommu backend, and staticize functions,
  remove the extra parent tag argument.
- Change the psycho and sbus drivers to just set cookie and method table
  in the root tag.
- Miscellaneous small fixes.

1 files changed, 1 insertions, 13 deletions

diff --git a/sys/sparc64/include/iommuvar.h b/sys/sparc64/include/iommuvar.h
index 493dee8..6640573 100644
--- a/sys/sparc64/include/iommuvar.h
+++ b/sys/sparc64/include/iommuvar.h
@@ -81,18 +81,6 @@ void iommu_enter(struct iommu_state *, vm_offset_t, vm_paddr_t, int);
 void iommu_remove(struct iommu_state *, vm_offset_t, size_t);
 void iommu_decode_fault(struct iommu_state *, vm_offset_t);
 
-int iommu_dvmamap_create(bus_dma_tag_t, bus_dma_tag_t, int, bus_dmamap_t *);
-int iommu_dvmamap_destroy(bus_dma_tag_t, bus_dma_tag_t, bus_dmamap_t);
-int iommu_dvmamap_load(bus_dma_tag_t, bus_dma_tag_t, bus_dmamap_t, void *,
-    bus_size_t, bus_dmamap_callback_t *, void *, int);
-int iommu_dvmamap_load_mbuf(bus_dma_tag_t, bus_dma_tag_t, bus_dmamap_t,
-    struct mbuf *, bus_dmamap_callback2_t *, void *, int);
-int iommu_dvmamap_load_uio(bus_dma_tag_t, bus_dma_tag_t, bus_dmamap_t,
-    struct uio *, bus_dmamap_callback2_t *, void *, int);
-void iommu_dvmamap_unload(bus_dma_tag_t, bus_dma_tag_t, bus_dmamap_t);
-void iommu_dvmamap_sync(bus_dma_tag_t, bus_dma_tag_t, bus_dmamap_t, int);
-int iommu_dvmamem_alloc(bus_dma_tag_t, bus_dma_tag_t, void **, int,
-    bus_dmamap_t *);
-void iommu_dvmamem_free(bus_dma_tag_t, bus_dma_tag_t, void *, bus_dmamap_t);
+extern struct bus_dma_methods iommu_dma_methods;
 
 #endif /* !_MACHINE_IOMMUVAR_H_ */