Unit. The AAU provides block fill, block copy, XOR, and XOR-parity-check
operations. We currently provide dmover(9) functions for "zero", "fill8",
and "copy".
Much of this code can be shared with the i80312 Companion I/O AAU, and
will be when support for the older chip is implemented.
A new "arm32_dma_range" structure now describes a DMA window, with
a system address base, bus address base, and length. In addition to
providing info about which memory regions are legal for DMA, the new
structure provides address translation support, as well.
As before, if a tag does not list any ranges, then all addresses are
considered valid, and no DMA address translation is performed.
This allows us to remove a large chunk of code which was duplicated and
tweaked slightly (to do the address translation) from the stock ARM
bus_dma in the XScale IOP and ARM Integrator ports.
Test compiled on all ARM platforms, test booted on Intel IQ80321 and Shark.
into platform-specific initialization code, giving platform-specific
code control over which free list a given chunk of memory gets put
onto.
Changes are essentially mechanical. Test compiled for all ARM
platforms, test booted on Intel IQ80321 and Shark.
Discussed some time ago on port-arm.
the virtual address for each DMA segment, just cache a pointer to the
original buffer/buftype used to load the DMA map, and use that. This
lets us shrink the bus_dma_segment_t down from 12 bytes to 8, and the
cache flushing is also more efficient.
Tested on an i80321 -- changes to others are mechanical.
be properly used by any misc. cloning device. While here, correct
a comment to indicate that "open" is the only entry point and that
everything else is handled with fileops.
* struct sigacts gets a new sigact_sigdesc structure, which has the
sigaction and the trampoline/version. Version 0 means "legacy kernel
provided trampoline". Other versions are coordinated with machine-
dependent code in libc.
* sigaction1() grows two more arguments -- the trampoline pointer and
the trampoline version.
* A new __sigaction_sigtramp() system call is provided to register a
trampoline along with a signal handler.
* The handler is no longer passed to sensig() functions. Instead,
sendsig() looks up the handler by peeking in the sigacts for the
process getting the signal (since it has to look in there for the
trampoline anyway).
* Native sendsig() functions now select the appropriate trampoline and
its arguments based on the trampoline version in the sigacts.
Changes to libc to use the new facility will be checked in later. Kernel
version not bumped; we will ride the 1.6C bump made recently.
mappings bus_dma(9) states: "In the event that the DMA handle contains
a valid mapping, the mapping will be unloaded via the same mechanism
used by bus_dmamap_unload()." And some drivers do mean to skip the
unload step.
u_int16_t and int16_t for the X and Y count registers. GCC produces better
code this way.
Also, initialise the stored state in wsqms_enable(), so that the mouse doesn't
warp to a random position on open.
sc_flags was never read. G/C it.
wsqms_attach() took two arguments that pointed to the same structure. G/C one
of them
Since wsqms controls the same device as qms, have it match the same attach
args.
