9 Commits

Author	SHA1	Message	Date
Marcel Moolenaar	4af242aad1	Implement busdma_md_unload() and busdma_sync(). ... While here: 1. have the Python bindings contain constants for the space identifiers and the sync operation. 2. change the segment iterators to return None when done, not ENXIO.	2015-07-03 05:47:56 +00:00
Marcel Moolenaar	22900685fd	Add busdma_md_create, busdma_md_destroy and busdma_md_load.	2015-07-03 02:06:47 +00:00
Marcel Moolenaar	d11f2a4c8d	Free the segment objects properly.	2015-06-12 14:53:56 +00:00
Marcel Moolenaar	cc6064789f	Add accessor functions for iterating over segments. A segment ... can be in bus address space, physical memory space or virtual memory space.	2015-06-11 03:02:40 +00:00
Marcel Moolenaar	c0027d73e2	Rename bus_space to bus (i.e. drop _space). This makes the ... API match the convenience macros in <sys/bus.h>. Bus space can now reference both bus and busdma.	2015-06-10 16:00:09 +00:00
Marcel Moolenaar	cbb052dd3e	Map the allocated DMA memory into the address space.	2015-06-08 22:01:34 +00:00
Marcel Moolenaar	6f769b730c	Add busdma_mem_alloc & busdma_mem_free.	2015-06-08 03:23:20 +00:00
Marcel Moolenaar	9c2cdb1a7e	Add DMA tag management to the C library and Python binding.	2015-06-06 16:14:03 +00:00
Marcel Moolenaar	0c2b180a35	Add a C libary and a Python module that implements an API similar ... to bus_space(9) and that uses the proto(4) driver for talking to hardware. If the I/O resource is a memory mapped I/O resource, then mmap(2) will be attempted to avoid read(2)/write(2) overhead. Sponsored by: Juniper Networks, Inc.	2014-04-28 18:06:11 +00:00