USB ethernet chip. Adapters that use this chip include the LinkSys
USB100TX. There are a few others, but I'm not certain of their
availability in the U.S. I used an ADMtek eval board for development.
Note that while the ADMtek chip is a 100Mbps device, you can't really
get 100Mbps speeds over USB. Regardless, this driver uses miibus to
allow speed and duplex mode selection as well as autonegotiation.
Building and kldloading the driver as a module is also supported.
Note that in order to make this driver work, I had to make what some
may consider an ugly hack to sys/dev/usb/usbdi.c. The usbd_transfer()
function will use tsleep() for synchronous transfers that don't complete
right away. This is a problem since there are times when we need to
do sync transfers from an interrupt context (i.e. when reading registers
from the MAC via the control endpoint), where tsleep() us a no-no.
My hack allows the driver to have the code poll for transfer completion
subject to the xfer->timeout timeout rather that calling tsleep().
This hack is controlled by a quirk entry and is only enabled for the
ADMtek device.
Now, I'm sure there are a few of you out there ready to jump on me
and suggest some other approach that doesn't involve a busy wait. The
only solution that might work is to handle the interrupts in a kernel
thread, where you may have something resembling a process context that
makes it okay to tsleep(). This is lovely, except we don't have any
mechanism like that now, and I'm not about to implement such a thing
myself since it's beyond the scope of driver development. (Translation:
I'll be damned if I know how to do it.) If FreeBSD ever aquires such
a mechanism, I'll be glad to revisit the driver to take advantage of
it. In the meantime, I settled for what I perceived to be the solution
that involved the least amount of code changes. In general, the hit
is pretty light.
Also note that my only USB test box has a UHCI controller: I haven't
I don't have a machine with an OHCI controller available.
Highlights:
- Updated usb_quirks.* to add UQ_NO_TSLEEP quirk for ADMtek part.
- Updated usbdevs and regenerated generated files
- Updated HARDWARE.TXT and RELNOTES.TXT files
- Updated sysinstall/device.c and userconfig.c
- Updated kernel configs -- device aue0 is commented out by default
- Updated /sys/conf/files
- Added new kld module directory
spl0) and some bitrot (the not-so-new callout_init/stop/reset functions
were not mentioned; the callout_activate/deactivate/pending macros are
still not mentioned).
Submitted by: mostly by jlemon
needed to access the internals of buffers but not necessarily to use
the VOP. <sys/buf.h> recently grew a bogus dependency on <sys/systm.h>
for the declaration of spl*, and I prefer to fix the synopsis breakage
by removing a wart instead of adding one.
VOP_ABORTOP() went away. at_shutdown() was replaced by undocumented
event handling. Rename remove_dev() here too, and remove the dead
and dead wrong man pages.
misdetecting FIFO capabilities, at least on my girlfriend's Thinkpad 755,
the driver doesn't work using the FIFO.
While i was at it, i (partially) fixed option FCC_YE since it would no
longer have compiled at all under -current. I've also made an attempt
to document the device driver flags value (ab-)used internally by this
option.
RELENG_3 candidate, but with a slightly different patch there (will go
to jkh in email).
parent being locked, but rather plays some hide and seek (does not lock if
dvp == vp).
Also add a BUGS section noting that this is undesired behaviour.
- isa => nexus
- flags
- GPL_MATH_EMULATE
- document breakage of non-GPL emulator since we use new compiler.
- break lines in paragraohs I touched so that sentenses start on new
lines.
of manual page sections. Make the two man pages consistent
with each other in the headers they list and they order they list
them in.
Note: this is the preferred ordering. All new man pages/additions
to man pages should try and follow this. Existing man pages
should be left alone, unless you are making major changes in
the man page and re-ordering of the sections is only a
minor part of the change.
PR: doc/15352, doc/15353
background ]
Rename sys/pci/pci_ioctl.h to sys/sys/pciio.h to make it easier for
userland programs to use this interface. Reformat the file, and add a
BSD-style copyright to it.
Add a new man page for pci(4). The PCIOCGETCONF, PCIOCREAD, and PCIOCWRITE
ioctls are documented, but the PCIOCATTACHED ioctl is not documented
because it is not implemented.
Change includes of <pci/pci_ioctl.h> to <sys/pciio.h> or remove them
altogether. In many cases, pci_ioctl.h was unused.
Reviewed by: steve
The same goes for CD drivers and tape drivers. In systems with mixed IDE
and SCSI, devices in the same priority class will be sorted in attach
order.
Also, the 'CCD' priority is now the 'ARRAY' priority, and a number of
drivers have been modified to use that priority.
This includes the necessary changes to all drivers, except the ATA drivers.
Soren will modify those separately.
This does not include and does not require any change in the devstat
version number, since no known userland applications use the priority
enumerations.
Reviewed by: msmith, sos, phk, jlemon, mjacob, bde
which it replaces. The new driver supports all of the chips supported
by the ones it replaces, as well as many DEC/Intel 21143 10/100 cards.
This also completes my quest to convert things to miibus and add
Alpha support.
[This] updates [elf.5] from the enitial work I did in Queen's (UK) English to
American English, as is normal for the -doc project stuff.
Submitted by: Jeroen Ruigrok van der Werven <asmodai@wxs.nl>
