blitting. Thanks to David Redman (Tadpole) for noticing it. This probably
escaped notice before, since we never do overlapping blits (in the X
direction), but this fix may prevent problems if someone ever does use it
for that.
This includes:
- fixing various structure definitions so that the ioctl parameter match
- adding a hw.twa*.driver_version sysctl
- do not refuse multiple device openings, as the management tool will do it.
I'm not sure we are safe. FreeBSD allows multiple openings, and use the
open flag only when an attempt to detach the device is done.
So far it only uses the blitter for scrolling and rectangle filling,
characters are still drawn in software and there's no support for video
mode switching. Virtual consoles are supported via vcons.
Works fine on a PowerBook 3400c.
now since some chipset revisions will freak out on the aparent
half-initialisation. Even on my machine i can't seem to get the SPDIF led
to light up so something is wrong.
Also delay the setting of the DMA bits until after the codec detection but
before the enabling of interrupts. Note that the dma has to be explicitly
started when the device is opened.
from Mark Kettenis of OpenBSD. There are still some outstanding
issues with this driver, namely:
- Checksum offload is unsupported
- There is a significant amount of code duplication from sk(4)
- There remain some 'magic numbers'
- Performance is not heavily tested, and likely to be lower than
the chip is capable of in some cases. Syncing some of the
aforementioned 'magic numbers' with the Marvell FreeBSD driver
should help here.
Tested on a motherboard with Marvell 88E8053 ethernet, under NetBSD/i386
and NetBSD/amd64.
The PIOBM is used by only one driver (will be added later,
stay tuned) and intruduce an attribute "ata_piobm" so that
it will be conditionally compiled in.
The "ata_dma" (busmastering transfer using ATA DMA mode) and
"ata_udma" (busmastering transfer using ATA Ultra DMA mode)
attributes are also added for consistency, but unused for now.
