- fix printing of Ultra-DMA modes (shows up when the drive supports highther
modes than the controller).
- Don't use C_NEEDDONE anymore. We were setting this flag in a possibly
freed wdc_xfer (this didn't create problems, as it was free'd in the POLL
case only, while IRQs are blocked, but it's not good practice anyway
and pool(9) complains about it ;)
was being initialized to a KVA, when we really wanted a DMA address. Change
the code to allocate the overrun buffer with the control blocks, and
properly initialize overrun_buf.
Note that overrun_buf cannot actually be shared between all boards; DMA safe
memory could vary from bus to bus.
Garbage-collect two functions which are no longer used because of the
above changes.
2 times in the past
- Set up timeout per xfer instead of per interrupt. This helps with
PIO transfer (we would call timeout()/untimout() several times for a
transfer).
- If we missed an interrupt for a PIO transfer, reset and restart it
immedialy, don't try to recover and continue. If we missed an interrupt we
may have lost a read/write cycle on the IDE bus. If this happens 1) we
corrupt data and 2) we enter an interrupt loop at the end of the xfer, as
the drive has some more data to read/write, but the host thinks the xfer is
done.
This last change fix the (or at last some of the) 'lookup after lost interrupt'
some peoples have been experiencing.
anyway, take advantage of this and greatly simplify the programming
of the multicast filter. This solves the last reported "device timeout"
problem with this driver.
to the EPIC/100 driver's (adjusting for the fact that Intel Ethernet chips
are from Pluto):
* Don't allocate receive buffers until the interface is actually brought
up, and release all of them if the interface is taken down.
* Add a knob (defaults to off) which will copy an incoming packet to
a single header mbuf if it is small enough to fit in one, rather than
burning an entire cluster on it. Note that this change will be mostly
moot if/when sbcompress() is changed to handle compressing clusters.
Simplify some of the receive list logic:
* Rather than using a homegrown queue and additional software RX descriptors,
use an ifqueue to queue receive buffers, and M_{GET,SET}CTX() to hook DMA
maps and receive buffers together.
Clean up a bit:
* Macroize a bunch of things to make the code a bit easier to follow.
so that they are not includes if no PHY is configured
(avoids code bloat if an interface driver has the "mii" attribute but
mii is not used by the particular version)
* Don't allocate receive buffers until the interface is actually brought
up, and release all of them if the interface is taken down.
* Add a knob (defaults to off) which will copy an incoming packet to
a single header mbuf if it is small enough to fit in one, rather than
burning an entire cluster on it. Note that this change will be mostly
moot if/when sbcompress() it changed to handle compressing clusters.
This makes close() work properly, but it is still not ideal. Perhaps
there should be different device nodes for input and output on to
and endpoint with the same number?
Pay attention to the SHORT_XFER_OK ioctl().
sending 5 bytes per sample, it sends 3 omitting the 2nd set of
dx/dy updates. You can distinguish between the two forms since
the first byte of 5-bytes seq will be 0b10000xxx which a 3-byte
will have 0b10001xxx. This changes allows the Xsun server to
run unchanged on the Tadpole 3GX (ignoring for now that the
colormap is still broken).
of the kernel). Also, if the mouse baud rate is 0, say the mouse the isn't
there (so a terminal may be attached in its place). Make debugging mouse
problems much easier.
by removing the "| wsdisplay" from the wsmux.c file declaration. This
will cause any kernel which includes wsdisplay but not wsmux explicitly
to fail to link, but at least those of us with multiple wsdisplays on
a single machine can build kernels again.
Constantine Sapuntzakis confirmed by Bill Sommerfeld. Although nothing is
supposed to call wakeup on this without setting AT_DONE, it's good practice to
do it this way (the process may be waken up by a setrunnable() call).
oster