after the volume had been fully operational; involves a change in the
use of the VF_NEWBORN flag. Now if you add a plex to a volume which
is up, the plex will be down and the subdisks stale. You need to
explicitly start the subdisks, which copies data from the good
subdisks to the uninitialized ones.
Stumbled-over-by: Ludwig Pummer <ludwigp@bigfoot.com>
give_sd_to_drive:
correct method to give the entire largest chunk of drive to the
subdisk. Now it's enough to specify a length, and vinum will give
you as much as it can. Not to be recommended except for empty
drives.
Correct a bogon which made vinum refuse to give the last sector of
a drive to a subdisk.
Last-reported-by: Ludwig Pummer <ludwigp@bigfoot.com>
Change %q formats to %ll before the former go away. This doesn't make
much difference, since kernel kvprintf currently doesn't support
either, and the messages in question are just error messages.
- Refined internal interface in keyboard drivers so that:
1. the side effect of device probe is kept minimal,
2. polling mode function is added,
3. and new ioctl and configuration options are added (see below).
- Added new ioctl: KDSETREPEAT
Set keyboard typematic rate. There has existed an ioctl command,
KDSETRAD, for the same purpose. However, KDSETRAD is dependent on
the AT keyboard. KDSETREPEAT provides more generic interface.
KDSETRAD will still be supported in the atkbd driver.
- Added new configuration options:
ATKBD_DFLT_KEYMAP
Specify a keymap to be used as the default, built-in keymap.
(There has been undocumented options, DKKEYMAP, UKKEYMAP, GRKEYMAP,
SWKEYMAP, RUKEYMAP, ESKEYMAP, and ISKEYMAP to set the default keymap.
These options are now gone for good. The new option is more general.)
KBD_DISABLE_KEYMAP_LOADING
Don't allow the user to change the keymap.
Move the Olicom token ring driver to the officially sanctionned location of
/sys/contrib. Also fix some brokenness in the generic token ring support.
Be warned that if_dl.h has been changed and SOME programs might
like recompilation.
The i++ loop from 1..1000 is too small on very fast machines like
PII 450 MHz. Increasing the loop from 1..100000 lets the machine
access PHY. After this patch it's possible to use a SMC PCI card
on a HP Kayak XA series PC Workstation. Workaround until this fix
was to enable debugging in the driver (#define EPIC_DEBUG 1).
Without that patch you get an undefined state:
while true
do
ifconfig -a | grep status:
done
The status messages flaps between twwo values, but not
"connected".
Obtained from: Ustimenko Semen <semen@iclub.nsu.ru>
determine IRQ and DRQ information.
Fix a bug that would cause us to attempt to retrieve extended sync
rate information on cards/firmware revs that do not support that command.
config info. On early revision cards (742a), the EISA register space,
other than the location used to determine the address of the card's main
command ports, is write only.
reports on those most welcome!
Fixed problems:
Hang on probe on "fantom" devices.
The probe now use a timeout to avoid hangs if no interrupt
is recevied.
There has also been more general code clenaups, and some reorgs.
connection.
Clean up support for devices featuring the multiple target SCSI ID feature.
On aic7890/91/96/97 chips, we can now assume the target role on multiple
target ids simultaneously. Although these chips also have sufficient
instruction space to hold to support the initiator and target role at the
same time, the initiator role is currently disabled as it will conflict
(chip design restriction) with the multi-tid feature. I'll probably add
a nob to enable the initiator (there-by disabling multi-tid) some time
in the future.
Return queue full or busy, depending on the tagged nature of the incoming
request, if our command input queue fills up in host memeory.
Deal with accept target I/O resource shortages.
If we get an underrun on a transaction that wasn't supposed to transmit
any data, don't attempt to print out the S/G list. The code would
run until hitting a non-present page. (oops)
interrupts are enabled, this kills the last "unwanted interrupts"
(and there is no ugly hacks like in the old driver to avoid them).
COmmand interrupt devices are now supported, this applies mostly
to older CDROM's and apparently also the ZIP.
Fixed problems:
Number of total sectors wrong on some older drives.
Fixed by not using the LBA size unless we know its valid.
There has also been more general code clenaups, some reorgs also.
Added "options ATA_STATIC_ID" that wires ATA disks like the old wd driver.
Fixed problems:
Dont use more sectors/intr than the drive supports.
Fix announce of > 8.4G disks.
Dont call ad_interrupt/ad_transfer when no disks config'd.
Use the right page# for CDR write mode params.
Fix breakage when no PCI support in kernel.
Implement DEVFS stuff.
General code clenaup.
Change VINUM_SAVECONFIG: it now requires a parameter. 0 means
"configuration updates are finished, please save", and 1 means "please
just save the config". This second meaning is invoked by the new
"saveconfig" command to vinum(8).
Recognize "referenced" drives by the lack of a slash in the device
name, not by a NUL character.
vinum_scandisk: return error indication (ENOENT if we can't find any
vinum drive, otherwise 0).
VINUM_SAVECONFIG: change parameters.
Don't save config while we're reading it from disk.
Change the way we handle the daemon: if we can't communicate with it
for 1 second (which is possible), start a new one. The daemon saves
its pid in daemonpid; on each iteration of the main loop the daemon
checks whether it's still in favour. If not, it silently exits.
Also, when trying to communicate with the daemon, check daemonpid
first. If it's set to 0, don't even try.
Rename the VF_KERNELOP to VF_DISKCONFIG and checkkernel () to
checkdiskconfig (), which better describes their function.
Disable configuration updates if we have an error reading in the
configuration. This stops a "shoot-in-foot" problem where a mistake
can cause the configuration to be obliterated.
Tidy up some messages, which included superfluous \ns.
Recognize RAID-5 configuration information even in the non-RAID-5
version. This fixes shoot-in-foot problems where starting the wrong
version of vinum would kill RAID-5 plexes.
Recognize drives that have been referenced, but for which no physical
location is known. This is part of a modification which will
ultimately allow incrementally reading configurations. Such drives
will have a device name "unknown".
New function return_drive_space () returns space to a drive.
Previously this was part of free_sd ().
give_sd_to_drive: don't do it if the subdisk needs more space than the
drive has available.
config_sd: if reading config from disk, accept plex offset, drive
offset and length specs of -1 to indicate error conditions.
parse_config: return ENOENT if the "read" command doesn't find any
drives.
remove_sd_entry: don't do it, even by force, if it's open.
If the size of a striped or RAID-5 plex is not an integral multiple of
the stripe size, trim the size until it is.
reinstate update_volume_config, which had atrophied, to recalculate
the size of a volume if a plex has shrunk due to stripe size
considerations.
vinumattach: Zero out tables after allocating them
Modify procedure at unload: if a vinum(8) has the superdev open, don't
close down. If only the daemon has it open, send the daemon a stop
request and wait for it to close the superdev, then unload.
In order to do this, create a second superdev which is opened by the
daemon. The open and close routines set a different bit in
vinum_conf.flags; otherwise the treatment is identical.
Remove opencount field in vol structure; replace by a flag bit, since
we can't count the number of opens.
Remove dead LKM grunge.
The much roumored replacement for our current IDE/ATA/ATAPI is
materialising in the CVS repositories around the globe.
So what does this bring us:
A new reengineered ATA/ATAPI subsystem, that tries to overcome
most of the deficiencies with the current drivers.
It supports PCI as well as ISA devices without all the hackery
in ide_pci.c to make PCI devices look like ISA counterparts.
It doesn't have the excessive wait problem on probe, in fact you
shouldn't notice any delay when your devices are getting probed.
Probing and attaching of devices are postponed until interrupts
are enabled (well almost, not finished yet for disks), making
things alot cleaner.
Improved performance, although DMA support is still WIP and not
in this pre alpha release, worldstone is faster with the new
driver compared to the old even with DMA.
So what does it take away:
There is NO support for old MFM/RLL/ESDI disks.
There is NO support for bad144, if your disk is bad, ditch it, it has
already outgrown its internal spare sectors, and is dying.
For you to try this out, you will have to modify your kernel config
file to use the "ata" controller instead of all wdc? entries.
example:
# for a PCI only system (most modern machines)
controller ata0
device atadisk0 # ATA disks
device atapicd0 # ATAPI CDROM's
device atapist0 # ATAPI tapes
#You should add the following on ISA systems:
controller ata1 at isa? port "IO_WD1" bio irq 14
controller ata2 at isa? port "IO_WD2" bio irq 15
You can leave it all in there, the system knows how to manage.
For now this driver reuses the device entries from the old system
(that will probably change later), but remember that disks are
now numbered in the sequence they are found (like the SCSI system)
not as absolute positions as the old system.
Although I have tested this on all the systems I can get my hands on,
there might very well be gremlins in there, so use AT YOU OWN RISK!!
This is still WIP, so there are lots of rough edges and unfinished
things in there, and what I have in my lab might look very different
from whats in CVS at any given time. So please have all eventual
changes go through me, or chances are they just dissapears...
I would very much like to hear from you, both good and bad news
are very welcome.
Enjoy!!
-Søren
tulip_addr_filter() on SIOCSIFFLAGS, and was nuking the IFF_ALLMULTI
on entering tulip_addr_filter(). As a result it was impossible to run
a multicast router on a machine with a "de" interface.
Added autodetection of MMAC Osprey 100 card for
Jan Schmidt <mmedia@rz.uni-greifswald.de>. The MMAC card has an EEPROM
which contains an ASCII string beginning with "MMAC".
Corrected Hauppauge Audio Mux Mute value from 0x01 to 0x04.
Fixed a typo.
Sumitted change:
Added ALPS Tuner Type submitted by Hiroki Mori <mori@infocity.co.jp>
Submitted by: Roger Hardiman and Hiroki Mori <mori@infocity.co.jp>
Addtron appear to have their own VIA Rhine II and RealTek 8139 boards
with custom PCI vendor and device IDs. This commit updates the PCI
vendor and device lists in the vr and rl drivers so that we can probe
the additional devices.
Found by: nosing around the PCI vendor and device code list at:
http://www.halcyon.com/scripts/jboemler/pci/pcicode
This is for various Olicom cards. An IBM driver is following.
This patch also adds support to tcpdump to decode packets on tokenring.
Congratulations to the proud father.. (below)
Submitted by: Larry Lile <lile@stdio.com>
Seems to solve a problem with a mouse not responding to movements in the
X direction. Problem description is still rather vague and solution is
not exactly clear. Problem might be a compiler optimisation.
driver was thinking irq was enabled although it wasn't.
This case was particular to a no-interrupt static configuration.
Reported by: "Norman C. Rice" <nrice@emu.sourcee.com>
Now should be able to report speed for cards using NatSemi PHY.
(if you have one please let me know if it works as I
only have the Intel version)
Reviewed by: David Greenman <dg@root.com>
Submitted by Roger Hardiman.
Added ioctl TVTUNER_GETCHANSET to discover which regions the bktr driver
supports. Submitted by Vsevolod Lobko <seva@alex-ua.com>
Added BT848_GPIO_SET_EN,BT848_GPIO_SET_DATA (and GETs) to allow user land
control of the GPIO pins. This allows a Radio module on the GPIO port
to be controlled. Submitted by Vsevolod Lobko <seva@alex-ua.com>
The kernel option BKTR_GPIO_ACCESS must be used to enable the GPIO ioctls.
Submitted by: Roger Hardiman and Vsevolod Lobko <seva@alex-ua.com>
the same name. Silently return EEXIST if this happens.
vinum_scandisk: Collect drive numbers, not pointers, to avoid problems
of relocated drives.
Tripped-over-by: Bernd Walter <ticso@cicely.de>
time out on an operation. Under these circumstances, vinum(8) will
automatically start another daemon. Add a pid for the daemon, so that
an overtaken daemon will discover that it's no longer in favour, and
will crawl into a corner and die.
peripheral drivers can determine where in the devstat(9) list they are
inserted.
This requires recompilation of libdevstat, systat, vmstat, rpc.rstatd, and
any ports that depend on the devstat code, since the size of the devstat
structure has changed. The devstat version number has been incremented as
well to reflect the change.
This sorts devices in the devstat list in "more interesting" to "less
interesting" order. So, for instance, da devices are now more important
than floppy drives, and so will appear before floppy drives in the default
output from systat, iostat, vmstat, etc.
The order of devices is, for now, kept in a central table in devicestat.h.
If individual drivers were able to make a meaningful decision on what
priority they should be at attach time, we could consider splitting the
priority information out into the various drivers. For now, though, they
have no way of knowing that, so it's easier to put them in an easy to find
table.
Also, move the checkversion() call in vmstat(8) to a more logical place.
Thanks to Bruce and David O'Brien for suggestions, for reviewing this, and
for putting up with the long time it has taken me to commit it. Bruce did
object somewhat to the central priority table (he would rather the
priorities be distributed in each driver), so his objection is duly noted
here.
Reviewed by: bde, obrien
define. Add a new config flag param (ISP_CFG_NONVRAM) whose intent it is
to cause NVRAM to be ignored. Add ISPASYNC_LOOP_DOWN and ISPASYNC_LOOP_UP
isp_async enums.
Amazingly enough, I did all my scsi_sa work recently without realizing
that I had a broken isp card whose (unchangeable- it's an old old old
isp1020) NVRAM has sync mode enabled, but disconnect/reconnect disabled-
the ISP_CFG_NONVRAM is definitely warranted when you want to bloody well
ignore the NVRAM and set something sensible.
Use fast memory timing NVRAM parameter. Clean up and fix establishment
of default target parameters. Don't use NVRAM if are flagged as not to
do so (I had a busted NVRAM setup which I couldn't edit that enabled SYNC
mode but disabled disconnect/reconnect and wide!!). Fix delays after
resets. BUS resets not done in isp_init anymore- relegated to OS
specific outer layers. Fix a buglet where you can get in a loop for
a NULL xs in the completion list in isp_intr. Add in some defines that
can disable fast posting. Add in code for Loop Up/Loop Down events that
call into the outer layers as to what to do.
Do not modify m_len before passing mbuf chains to bpf.
Don't forget to pass packets to bpf when running in Crynwr mode (LINK0).
Partially based on a patch by Bill Fenner <fenner@freebsd.org>.
PR: bin/7241
Improved MSP34xx reset for bt848 Hauppauge boards.
Added detection for Bt848a.
Vsevolod Lobko<seva@sevasoft.alex-ua.com> added more XUSSR channels.
Submitted by: parts from Vsevolod Lobko<seva@sevasoft.alex-ua.com>
Obtained from: parts from OpenBSD
the screen width.
- Store the current video mode information in the `video_adapter' struct.
- The size of the `v_offscreensize' field in the VESA mode information
block is u_int16, not u_int8.
Increase the overall length of the delay by 10.
Without this a 3C509 card on my MediaGX crash box can't be reliably
read. With this it is solid.
I've left a delay multiplier in instead of just changing the base
delay because I'm surprised I had to increase it so much and expect
there may be another problem.
Change microseq offsets. Previously, offsets of the program counter where
added to the index of the current microinstruction. Make them rely on the
index of the next executed microinstruction.
Suggested by: Luigi Rizzo <luigi@labinfo.iet.unipi.it>
the startup code. Implement a call to outer framework function so that
asynchronous events can be handled (e.g., speed negotiation, target mode).
Roll internal release tags.
cycle to get rid of the old 1.31 firmware. *@!$&^@&$!&^&^!!!!!
But anyway comment it out and use new SBus 7.55 firmware. We get fast posting
with this as well as 32 luns and target mode support.
(not that this is used yet in FreeBSD, but it's ready for FreeBSD-sparc
whenever it happens....)
v_caddr_t with extreme prejudice. Here the bogons were originally
the same as for c_caddr_t (half-baked K&R support), but rev.1.95
changed one wrong cast and one harmless cast to 2 wrong casts,
and rev.1.96 only fixed the originally wrong cast.
c_caddr_t with extreme prejudice. Here the original casts to
caddr_t were to support K&R compilers (or missing prototypes),
but the relevant source files require an ANSI compiler.
apparently in accordance with style(9).
Complained-about-by: bde
vinumopen: Change check for root user to a call to suser(9)
vinumclose: Remove check for root user.
Nitpicked-by: phk
Auto Detection Mode. This leaves MSP3400C owners still unsupported.
Thanks to Gerd Knorr <kraxel@cs.tu-berlin.de> for providing some early
assistance and sample code in the linux bttv driver.
Nicolas Souchu <nsouch@freebsd.org> ported the msp_read/write/reset
functions to smbus/iicbus.
METEOR_INPUT_DEV2 now selects a composite camera on the SVIDEO port.
For true SVIDEO, use METEOR_INPUT_DEV_SVIDEO.
If you get a monochrome image from the SVIDEO port, you have
seleted the wrong input type.
Tested by: Johan Larsson<gozer@ludd.luth.se>
keyboard.
- Translate some keycode for the 84 keyboard so that the 84 keyboard
and the 101 keyboard become more compatible in terms of keycodes.
- Updated the built-in keymaps so that it is in line with the recent
changes in share/syscons/keymaps.
- Added some comment on the Pause/Break key on the 101 keyboard.
vinum_scandisk: check not only drive error, but also drive state,
before accessing the drive.
drivecmp: Remove warning messages by Backing out overly constant
declarations in revision 1.9.
Change from lkm to kld
Add field plexsdno to sd struct
Add flag VF_NEWBORN to drive, sd, plex and volume structs, indicating
that the object has just been created.
Add object types for raw (unattached) plexes and subdisks
Remove definitions of VOLNO, PLEXNO and SDNO (now functions Volno,
Plexno and Sdno)
Move revive parameters from struct plex to struct sd.
struct plex:
maintain a count of the number of inaccessible subdisks.
remove defective and unmapped regions.
Debug flags: make an enum (previously #define)
Set default revive block size to 64kB (was 32 kB)
Previously, accidentally starting the wrong version could corrupt
the RAID5 configuration.
Add functions Volno, Plexno and Sdno to replace the old defines
VOLNO, PLEXNO and SDNO.
Change from lkm to kld
Serious rewrite. No longer call set_<foo>_state to set the state
based only on other objects; instead, add functions
update_<foo>_state, which determine what the state should be by
themselves. This allows the set_<foo>_state functions to shrink
enough to be almost intelligible.
Remove flags setstate_recurse and setstate_recursing.
Remove plex defective regions and unmapped regions, which were
maintained but not used.
Change code to allow daemon to perform operations formerly kludged
into an interrupt context. Remove the DIRTYCONFIG kludge.
Change from lkm to kld
Remove #ifdefs for FreeBSD 2.c
vinumstrategy:
Support anonymous (`raw') subdisks and plexes.
Change code to allow daemon to perform operations formerly kludged
into an interrupt context. Remove the DIRTYCONFIG kludge.
No longer set B_ORDERED for reviving subdisks. I suspect this
wouldn't work correctly, and it should be done in a different manner
in vinumrevive.c
sdio: set subdisk state correctly on error
start to remove code that doesn't make any sense any more.
Remove #ifdefs for FreeBSD 2.c
Change from lkm to kld
correct type of `flags' in calls to set_drive_state.
set_drive_parms: handle anonymous drives correctly (remove them)
drive VOP functions: use the PID of the original opener to fool the
lock manager.
open_drive: be quiet about failures (they're normal when scanning the
partitions).
close_drive: lock drive before closing.
remove_drive: lock drive before deallocating.
read_drive_label: set drive up when all is OK
check_drive:
Complete rewrite. Offload most of the code to the new
vinum_scandisk
format_config:
use snprintf and %qd options to make much less emetic.
Remove old supporting functions.
vinum_scandisk:
Moved here from vinum.c
Almost complete rewrite, incorporating much of what was check_drive.
We still don't have a general way to find the drives on a system, so
get the user to supply the names via the `read' command. For each
device, try each possible compatibility slice name (there's a danger
of finding both /dev/da1h and /dev/da0s1h otherwise). Sort the
partitions found in reverse order of last update time and read them
in, setting the `update' parameter to parse_config and descendents.
save_config: rename to daemon_save_config, since the function is now
called by the daemon. Create a new function save_config which queues
the request with the daemon.
daemon_save_config: some mods to allow for the unfamiliar
environment.
Change from lkm to kld
Remove BROKEN_GDB kludge (it's not needed with klds)
Add code for interfacing with daemon
Modify device minor number encoding, use selector functions which also
permit anonymous plexes and subdisks.
Remove code for 2.x support.
Change messages to omit obvious words like 'plex' and 'subdisk.
give_plex_to_volume: invalidate subdisks being given to a plex which
is part of a volume with other plexes.
give_sd_to_plex: keep track of plex size in all cases
lock drives before closing them, to keep the daemon from getting
confused.
config_drive: handle partition type errors more gracefully
config_subdisk: set subdisk state correctly
find_drive, find_drive_by_dev, find_subdisk, find_plex, find_volume:
set VF_NEWBORN flag when a new object is created
config_drive:
Handle partition_status returns more cleverly.
Replace the device name in some cases where it got overwritten.
config_subdisk:
add parameter `update'. If the object already exists, exit without
any changes.
Set state correctly.
config_plex, config_volume:
add parameter `update'. If the object already exists, exit without
any changes.
parse_config:
move read function to vinum_scandisk.
add parameter `update' to pass to config_<object>.
remove_<object>_entry:
print a message when the object is removed.
update_plex_config:
Start defusing this function, which will go away some time.
Remove calls to update_volume_config.
Make size 64 bits
Change from lkm to kld
Remove BROKEN_GDB kludge (it's not needed with klds)
Add code for interfacing with daemon
Modify manner of determining when module is idle
Modify device minor number encoding, use selector functions which also
permit anonymous plexes and subdisks.
Remove code for 2.x support.
Move vinum_scandisk to vinumio.c
Remove myproc kludge
Keep track of open volumes by flag, not by pid (the pids caused some
problems with the lock manager).
free_vinum:
Remove unmapped and defective regions from plexes.
Wait for daemon to stop before returning
vinumopen:
Don't refuse an open if the volume is already open.
pnp system in freebsd, I'm not sure how useful this will be, but my
1542CP seems to work well in plug and play mode and does seem to
probe correctly at all the oddball addresses/irq/drqs that I tried.
[[
I was unable to get /kernel.conf or /kernel.config to read in, so
I wasn't able to verify that this method of userconfig works. that's
one thing that makes pnp so hard to use in the current scheme.
Pointers to the right new way of doing this accepted.
]]
o Add some kludges to maybe bring support for 1540A/1542A into the
driver. Since I have no 154xA cards, and the only person I know
that has them hasn't given me feedback, I'm making this commit
blind.
o Honor unit numbers that are in the config file now. This allows one
to hard wire the unit numbers (and have high unit numbers for plug
and pray devices, which can't seem to be hardwired) and have the
cards not migrate from aha1 -> aha0 should aha0 go on the fritz. I
didn't verify that hard wired scsi busses would work, but did verify
that hard wired aha addresses did work to a limited extent. Both
aha0 and aha1 must be hardwired, or when the card that was in aha0
goes away, the probe for aha0 might pick up the card that otherwise
would have been aha1.
The previous code just ignored the invalid map register, but this gave
surprising results because of the way pci_map_port() associated the map
register offset supplied with a map entry in the map array.
- Bring down the splash screen when a vty is opened for the first
time.
- Make sure the splash screen/screen saver is stopped before
switching vtys.
- Read and save initial values in the BIOS data area early.
VESA BIOS may change BIOS data values when switching modes.
- Fix missing '&' operator.
- Move ISA specific part of driver initialization to syscons_isa.c.
atkbd
- kbdtables.h is now in /sys/dev/kbd.
all
- Adjust for forthcoming alpha port. Submitted by: dfr
reorganization in rev 1.16 of i386/include/types.h which changed
stdlib.h's use of <machine/types.h>. The problem was the -I. was causing
machine/types.h to come from the current kernel source, while stdlib.h was
coming from /usr/include. /usr/include/stdlib.h is as old as the last
'make world', the machine/types.h was as new as the current source.
0 success
EAGAIN try again later
other don't call this screen saver again
- Test flags consistently to examine the status of the screen saver.
scrn_blanked: the screen saver is running
scp->status & SAVER_RUNNING: the saver is running in this vty
- Correctlyu preserve status flag bits in set/restore_scrn_saver_mdoe().
if option CY_PCI_FASTINTR is configured and mapping the irq to a
fastintr is possible. Unfortunately, this has to be optional because
pci_map_int_right() doesn't handle the INTR_EXCL flag right --
INTR_EXCL is honoured even if the interrupt needs to be non-exclusive
for other devices to work.
buffer had to be left on the head of the queue for [bufq]disksort()
to sort against. This isn't right for devices that can support multiple
active i/o's, and only the fd driver did it. "Fixing" this in rev.1.36
of ufs_disksubr.c broke the fd driver in much the same way as rev.1.52
of <sys/buf.h> broke it (see rev.1.119).
Bug reported and fix tested by: dt
black hole device. The controller will now only accept selections if
the black hole device is present and some other target/lun is enabled
for target mode.
Handle the IGNORE WIDE RESIDUE message. This support has not been tested.
Checkpoint work on handling ABORT, BUS DEVICE RESET, TERMINATE I/O PROCESS,
and CLEAR QUEUE messages as a target.
Fix a few problems with tagged command handling in target mode.
Wait until the sync offset counter falls to 0 before changing phase
after a data-in transfer completes as the DMA logic seems to indicate
transfer complete as soon as our last REQ is issued.
Simplify some of the target mode message handling code in the sequencer.
