diff options
Diffstat (limited to 'sys/sparc64/include/bus.h')
| -rw-r--r-- | sys/sparc64/include/bus.h | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/sys/sparc64/include/bus.h b/sys/sparc64/include/bus.h index 2a3e5a6..4e0c2b4 100644 --- a/sys/sparc64/include/bus.h +++ b/sys/sparc64/include/bus.h @@ -957,6 +957,17 @@ typedef void bus_dmamap_callback_t(void *, bus_dma_segment_t *, int, int); typedef void bus_dmamap_callback2_t(void *, bus_dma_segment_t *, int, bus_size_t, int); /* + * A function that performs driver-specific syncronization on behalf of + * busdma. + */ +typedef enum { + BUS_DMA_LOCK = 0x01, + BUS_DMA_UNLOCK = 0x02, +} bus_dma_lock_op_t; + +typedef void bus_dma_lock_t(void *, bus_dma_lock_op_t); + +/* * Method table for a bus_dma_tag. */ struct bus_dma_methods { @@ -996,13 +1007,15 @@ struct bus_dma_tag { int dt_flags; int dt_ref_count; int dt_map_count; + bus_dma_lock_t *dt_lockfunc; + void * *dt_lockfuncarg; struct bus_dma_methods *dt_mt; }; int bus_dma_tag_create(bus_dma_tag_t, bus_size_t, bus_size_t, bus_addr_t, bus_addr_t, bus_dma_filter_t *, void *, bus_size_t, int, bus_size_t, - int, bus_dma_tag_t *); + int, bus_dma_lock_t *, void *, bus_dma_tag_t *); int bus_dma_tag_destroy(bus_dma_tag_t); @@ -1025,4 +1038,8 @@ int bus_dma_tag_destroy(bus_dma_tag_t); #define bus_dmamem_free(t, v, m) \ ((t)->dt_mt->dm_dmamem_free((t), (v), (m))) +/* + * Generic helper function for manipulating mutexes. + */ +void busdma_lock_mutex(void *arg, bus_dma_lock_op_t op); #endif /* !_MACHINE_BUS_H_ */ |
