I would like to provide a way to preview the effects of pathname edits,
but pattern selection has to happen against the unedited path, so it
seems that we have to show people the unedited path to help in
designing selection patterns.
o Removed unneeded header files.
o bus_dma(9) fix:
- created parent tag with 1GB dma address limit with no
alignment restrictions.
- set 4096 alignment limit for Tx/Rx descriptor rings.
- separate Rx buffer tag from Tx buffer tag such that Tx tag
allows up-to 16 segments while Rx buffer tag only allows
single segment.
- it seems the controller has no alignment restrictions on Tx/Rx
buffers. Remove ETHER_ALIGN alignment restriction in Tx/Rx
buffers.
- created a spare Rx dma map which would be used to cope with
failure of loading a dma map.
- make sure to load full Tx/Rx descriptor size for Tx/Rx
descriptor dma maps, previously bfe(4) used to load single
descriptor size for each descriptor rings. I have no idea how
it could be run without problems.
- don't blindly cast bus_addr_t type to 32bits in bfe_dma_map().
- created bfe_dma_free() to free allocated dma memory/tags.
- make sure to invoke bus_dmamap_sync(9) before/after processing
descriptor rings/buffers. Because the hardware has severe dma
address space limitation, bounce-buffers would be always used
on systems with more than 1GB memory during
descriptors/buffers access.
- added Tx descriptor ring initialization function,
bfe_list_tx_init().
- moved producer/consumer index initialization to
bfe_list_tx_init() and bfe_list_rx_init() from
bfe_chip_reset().
- added bfe_discard_buf() which will update loaded descriptors
without unloading/reloading the dma map to speed up error
recovery.
- implemented Tx side bus_dmamap_load_mbuf_sg(9). The number of
segments allowed was chosen to be 16 which should be enough for
non-TSO capable hardwares. Setting SOF bit of Tx descriptor is
done in the last to avoid potential race.
- don't give up sending frames in bfe_start() until the hardware
lacks free descriptors.
- added XXX comment to second kick command and possible workaround.
- implemented Rx side bus_dmamap_load_mbuf_sg(9).
- removed bfe_dma_map_desc() as it's not needed anymore after
the conversion to bus_dmamap_load_mbuf_sg(9).
- added endianness support. With this change bfe(4) should work
on any architectures that can create bounce buffers within 1GB
address range.
- add missing bus_dmamap_sync() in bfe_tx_eof()/bfe_rx_eof().
o Use PCI_BAR instead of hardcoded value to set BARs.
Simplified register access with bus_write_4(9)/bus_read_4(9) and
removed bfe_btag, bfe_bhandle, bfe_vhandle in softc as it's not
used anymore.
o Reorder device detach logic such that bfe_detach() is also used
for handling driver attach failure case.
o Remove unnecessary KASSERT in bfe_detach().
o Remove bfe_rx_cnt, bfe_up, bfe_vpd_prodname, bfe_vpd_readonly in
softc. It's not used at all.
o Remove BFE_RX_RING_SIZE/BFE_RX_RING_SIZE/BFE_LINK_DOWN.
Tested by: kib, Gleb Kurtsou gleb.kurtsou at gmail dot com
Ulrich Spoerlein uspoerlein at gmail dot com
too, so, instead of descending to the i386 directory, we add some magic to
the parent Makefile.
These man pages refer to drivers that I'm aware that work on amd64. Most
likely there are more, but I'll deal with them later.
Approved by: brueffer, philip, takawata
memory area's base and limit are optional. The low 4-bits of the "low"
prefetchable registers indicates whether or not a 32-bit or 64-bit
region is supported. The PCI-PCI driver had been assuming that all bridges
supported a 64-bit region (and thus the two upper 32-bit registers). Fix
the driver to only use those registers if the low 4-bits of the "low"
registers indicate that a 64-bit region is supported. The PCI-PCI bridge
in the XBox happens to be a bridge that only supports a 32-bit region.
Reported by: rink
MFC after: 1 week
and 5000P/V/Z chipsets.
- If the base address of the config space BAR is above 4GB for some reason
and this isn't a PAE kernel, then warn about this (under bootverbose)
and don't use the BAR.
PR: kern/126525
Submitted by: Arthur Hartwig @ Nokia
MFC after: 2 weeks
complains about "Malformed numbers" while unpacking the dists and
what winds up on the disk isn't correct. Use this as an opportunity
to switch over to bsdcpio since at this point we don't even build
and install the gnu cpio by default. Note sysinstall needed to be
tweaked a bit (dropping tape block size setting) because it seems
bsdcpio doesn't do anything with block sizes, at least as far as
reading from archives goes. That wasn't really a problem since
installations from tape have been broken for a while and the rest
of sysinstall's tape support code will be removed shortly.
tape have been broken for quite a while, and I'll be removing the rest
of sysinstall's knowledge of tapes shortly. I'm doing this piece now
because I want to switch from gnu's cpio to bsdcpio being integrated
into the installation environment and bsdcpio doesn't seem to handle
block sizes at all.
if a user logged in more than a week ago.
This may contain multibyte characters (e.g. when using UTF-8).
This string is then aligned on byte-length rathern than char-length,
resulting in misalignment and unfinished multibyte characters.
PR: 126657
Submitted by: Johan van Selst <johans@stack.nl>
We used to have a single wait channel inside the kernel which could be
used by threads that just wanted to sleep for some time (the next
second). The old TTY layer was the only piece of code that still used
lbolt, because I already removed the use of lbolt from the NFS clients
and the VFS syncer.
Approved by: philip
The routines in grantpt.c have been moved to ptsname.c in the MPSAFE TTY
layer, because grantpt() is now effectively a no-op. I forgot to remove
the corresponding source file from libc.
I initially didn't want to integrate the Xen console driver, because it
did not receive any testing. Kip Macy suggested that I'd better check it
in right now, because this is the easiest way for him to test it while
he is working on the Xen import.
Requested by: kmacy
For some reason, sys/sys/tty.h was only half patched. This went by
unnoticed, because the copyright notice on the top already displayed my
name, so I thought the file went in properly.
Reported by: kmacy
The previous commit also included changes to all the system call lists,
but it is a tradition to update these lists in a second commit, so rerun
make sysent to update the $FreeBSD$ tags inside these files to refer to
the latest version of syscalls.master.
Requested by: rwatson
The last half year I've been working on a replacement TTY layer for the
FreeBSD kernel. The new TTY layer was designed to improve the following:
- Improved driver model:
The old TTY layer has a driver model that is not abstract enough to
make it friendly to use. A good example is the output path, where the
device drivers directly access the output buffers. This means that an
in-kernel PPP implementation must always convert network buffers into
TTY buffers.
If a PPP implementation would be built on top of the new TTY layer
(still needs a hooks layer, though), it would allow the PPP
implementation to directly hand the data to the TTY driver.
- Improved hotplugging:
With the old TTY layer, it isn't entirely safe to destroy TTY's from
the system. This implementation has a two-step destructing design,
where the driver first abandons the TTY. After all threads have left
the TTY, the TTY layer calls a routine in the driver, which can be
used to free resources (unit numbers, etc).
The pts(4) driver also implements this feature, which means
posix_openpt() will now return PTY's that are created on the fly.
- Improved performance:
One of the major improvements is the per-TTY mutex, which is expected
to improve scalability when compared to the old Giant locking.
Another change is the unbuffered copying to userspace, which is both
used on TTY device nodes and PTY masters.
Upgrading should be quite straightforward. Unlike previous versions,
existing kernel configuration files do not need to be changed, except
when they reference device drivers that are listed in UPDATING.
Obtained from: //depot/projects/mpsafetty/...
Approved by: philip (ex-mentor)
Discussed: on the lists, at BSDCan, at the DevSummit
Sponsored by: Snow B.V., the Netherlands
dcons(4) fixed by: kan
place to add this connection, since the interrupt is for a GPIO pin,
but since we have no alternative at the moment...
Submitted by: Hans Petter Selasky
