This is a completely rewritten scsipi_xfer execution engine, and the
associated changes to HBA drivers. Overview of changes & features:
- All xfers are queued in the mid-layer, rather than doing so in an
ad-hoc fashion in individual adapter drivers.
- Adapter/channel resource management in the mid-layer, avoids even trying
to start running an xfer if the adapter/channel doesn't have the resources.
- Better communication between the mid-layer and the adapters.
- Asynchronous event notification mechanism from adapter to mid-layer and
peripherals.
- Better peripheral queue management: freeze/thaw, sorted requeueing during
recovery, etc.
- Clean separation of peripherals, adapters, and adapter channels (no more
scsipi_link).
- Kernel thread for each scsipi_channel makes error recovery much easier
(no more dealing with interrupt context when recovering from an error).
- Mid-layer support for tagged queueing: commands can have the tag type
set explicitly, tag IDs are allocated in the mid-layer (thus eliminating
the need to use buggy tag ID allocation schemes in many adapter drivers).
- support for QUEUE FULL and CHECK CONDITION status in mid-layer; the command
will be requeued, or a REQUEST SENSE will be sent as appropriate.
Just before the merge syssrc has been tagged with thorpej_scsipi_beforemerge
saves about 2.2MB under /usr/include/dev/. Discussed on tech-kern@
recently.
I HOPE to get the list right. The headers I left in are ones
used for MI tools and those whose usage I discovered by grep over tree sources.
Feel free to put needed includes back in if you encounter anything which
should not be removed from lists.
This now provides slightly more functionality than the FreeBSD layer1-newbus
interface. It was meant to be a simple change to one header and a few
c files, but the change rippled all through various stuff.
To prevent a change to the kernel<->userland interface right now the kernel
is now lying about card types to userland (but who cares). This will be fixed
when the userland interface changes, after layer 3 <-> layer 4 has been
fixed.
Functional changes:
Provide a clean interface for hardware drivers to attach to the upper
layers. This will need another small change in the B-channel handling
when a similar change to the layer 3 <-> layer 4 interface happens.
Avoid passing indices into global arrays of pointers around, instead pass
the pointers itself. Don't code hardware driver types by predefined magic
numbers (think LKM). Prepare for detachable drivers (think pcmcia).
While there remove some sets of function pointers always pointing to the
same function (meant to be the configurable set of D channel protocol
handlers). It is unlikely another supported D-channel protocol will fit into
that (maximal layer interface) abstraction. When we get support for another
protocol, we will need to come up with a workable interface. Besides, the
old implementation was, uhm, strange.
need an interupt when the hardware hits tx chain end. We switch on one
int per packet sent when we fill up and go into OACTIVE mode.
Measured total interupt savings on large NFS writes: 20%.
- Adjust for the driver to be configured as fdisa
- Add a for the atari correct fd_types array
- Work around the fact that the atari has no machine/conf.h
remove all (legacy) "i4b_" prefixes outside of sys/netisdn.
Prefix all card specific driver support files with the basename
of the driver bus attachement file.
Renamed here:
i4b_isic_isa.c -> isic_isa.c
i4b_avm_a1.c -> isic_isa_avm_a1.c
i4b_daic_isa.c -> daic_isa.c
i4b_itk_ix1.c -> isic_isa_itk_ix1.c
i4b_tel_s08.c -> isic_isa_tel_s08.c
i4b_tel_s016.c -> isic_isa_tel_s016.c
i4b_tel_s0163.c -> isic_isa_tel_s0163.c
i4b_usr_sti.c -> isic_isa_usr_sti.c
This adds support for EtherExpress/16 cards with 16k of RAM, and in the
process adds general support for PIO mode on these cards. This entails
changing the way the i82586 driver handles bus barriers, since it doesn't
allow for strange cases like this.
This has been tested on the i386 port with the 'ix' driver in both
16KB (which was the source of the problem) and 32KB modes, as well
as with the 'ef' driver. I've tested it (briefly) with 'ei' on arm26
as well. In theory, drivers other than 'ix' should follow precisely the
same code paths as before.
the number of partitions is > OLDMAXPARTITIONS. This is better
than silently truncating the label (don't want to silently throw
away partitions when using an old disklabel binary on a label with
> 8 partitions). From Enami Tsugutomo.
This is the kernel part (userland to follow soon) of the latest (and
very probably last) release (version 0.96) of ISDN4BSD. ISDN4BSD has a
homepage at http://www.freebsd-support.de/i4b/.
It gives the user various ways to use the isdn connection: raw data (via
the i4brbch "raw b-channel" device), ppp (via the isp "isdn PPP" device),
voice/answering machine (the i4btel "telephone" device) and ip over isdn
(the ipr device, "IP over raw ISDN").
Supported are a bunch of common and older cards, more to be added soon
after some cleanup. Currently only the european E-DSS1 variant of the
ISDN D channel protocol is supported.
support for it and we're configured for separate play and record
DRQs. This makes full-duplex audio work on the Windows Sound System
(found in many Alpha systems).
Submitted by Juergen Weiss <weiss@uni-mainz.de> in kern/11178.
the stack, and remove the no-longer-necessary PHOLD()/PRELE() calls
in fdformat().
(This eliminates 1/3 of the instances of PHOLD()/PRELE() in the kernel code.)
XXX We still have too many mostly-redundant floppy drivers.
register for a port under high load. The effect is that the port is wedged
waiting for an interrupt that will never come.
Add a callout-based watchdog which periodically (hz/10) scan trough the ports
for missed interrupts.
Problem also noted by Chris Jones, and this fix also helped him.
a) use stream methods when transferring data via the MEMPORT into/out of
the chips buffer memory
b) use htole16/le16toh when interpreting 16bit values in the chips memory
Both where NOPs on i386 machines, which is why this worked before on the
test machine(s), but would break when on a big-endian machine.
it, before starting the command to install the multicast list.
(We did it right for writing data packets, but failed here.)
Without this, the last multicast address installed won't be made active.
"off_t" and the return value is a "paddr_t" to allow mappings
at offsets past 2^31 bytes. Somewhat inspired by FreeBSD, which
only changed the offset to a "vm_offset_t".
Includes updates for the i386, pc532 and sh3 mmmmap from Jason Thorpe.
such as the LM78 and VT82C686A (and eventually ACPI). Multiple
sensor devices can be hooked registered with `sysmon', and eventually
sysmon will also handle hardware (and software) watchdog timers.
Convert the `lm' and `viaenv' drivers to the new interface.
have _detach() functions:
Ensure that softc keeps state about whether the attach succeeded,
and make the detach function return immediately if the attach did
not complete.
This work is based on code written by Scott D. Telford, the IBM
Token Ring card attachment was written by Gregory McGarry.
XXX this is still very experimental and development version; use at your
XXX own risk
is not a reasonable place to allocate 12-bit pcmcia iospace.
It seems to cause conflicts on a large number of modern laptops,
necesitating hand-patching of the kernel (mostly due to
video devices in the upper range of that space).
This will presumably cause problems on the NEC Versa 6030X,
however that appears to be a vastly less common case than
the laptops that are inconvenienced by the current state.
12-bit iospace now uses 0x400-0xfff.
but the registers actually begin at 0x3f2, and this is what PNPBIOS reports
for the floppy controller resources. Adjust the register offsets and the
mapping of them for the ISA front-end to compensate, so that the PNPBIOS
attachment of the floppy controller actually works.
where the floppy driver would wedge because a motor-on timeout would
be cancelled by another I/O operation cancelling a motor-off timeout.
From enami tsugutomo <enami@sm.sony.co.jp>.
timeout()/untimeout() API:
- Clients supply callout handle storage, thus eliminating problems of
resource allocation.
- Insertion and removal of callouts is constant time, important as
this facility is used quite a lot in the kernel.
The old timeout()/untimeout() API has been removed from the kernel.
a call to hook up a bell-ringer (since the keyboard itself has no bell).
This eliminates the need for #ifdefs for the bell-ringer in the pckbd
driver.
- Add cnbell() support to pckbd.
now prevents power down/save the device.
The external input sources are muted by default at initialization.
- Change "power.power.*" to "power.save.*". Sorry, spec change....
- Shorten tsleep(9) ident string for "ps l".
CardBus bus stub, YENTA PCI-CardBus bridge (cbb), 3Com 3C575TX driver
(ex) and Intel fxp driver.
TODO:
o Conform to the KNF more strictly.
o Be unified with pcmcia code as much as possible.
o Add more drivers for CardBus card, such as APA-1480 or USB card.
The affected files are listed below.
sys/arch/i386/conf/files.i386
sys/arch/macppc/conf/files.macppc
sys/conf/files
sys/dev/ic/elinkxl.c
sys/dev/ic/elinkxlvar.h
sys/dev/ic/i82365.c
sys/dev/ic/i82365var.h
sys/dev/isa/i82365_isasubr.c
sys/dev/pci/files.pci
sys/dev/pcmcia/pcmcia.c
sys/dev/pcmcia/pcmciachip.h
The added files are listed below.
sys/arch/i386/conf/CARDBUS
sys/arch/i386/include/rbus_machdep.h
sys/arch/i386/i386/rbus_machdep.c
sys/arch/macppc/include/rbus_machdep.h
sys/arch/macppc/macppc/rbus_machdep.c
sys/dev/cardbus/if_ex_cardbus.c
sys/dev/cardbus/Makefile.cardbusdevs
sys/dev/cardbus/cardbus.c
sys/dev/cardbus/cardbus_map.c
sys/dev/cardbus/cardbusdevs
sys/dev/cardbus/cardbusdevs.h
sys/dev/cardbus/cardbusdevs_data.h
sys/dev/cardbus/cardbusvar.h
sys/dev/cardbus/cardslot.c
sys/dev/cardbus/cardslotvar.h
sys/dev/cardbus/devlist2h.awk
sys/dev/cardbus/files.cardbus
sys/dev/cardbus/if_fxp_cardbus.c
sys/dev/cardbus/pccardcis.h
sys/dev/cardbus/rbus.c
sys/dev/cardbus/rbus.h
sys/dev/pci/pccbb.c
sys/dev/pci/pccbbreg.h
sys/dev/pci/pccbbvar.h
1. Add power control to reduce power consumption.
The behavior can be controlled by mixerctl(1).
2. Add suspend/resume hook to keep the parameters.
Currently this includes CODEC and control registers but
does not include the DMA state. FIXME.
3. Support "opl at ym" and "mpu at ym" attachment.
Actually, this is required for power control.
4. Add support for the on-chip 3D enhancement hardware.
This includes bass/treble enhancement, wide stereo, and
the equalization mode. This can be controlled by mixerctl(1).
5. Make "audioctl -w play.gain=xxx" work like as
"mixerctl -w inputs.dac=xxx" and now it changes
the wave output volume correctly.
6. Support hardware master volume switches.
7. Change formula of calculating gain so that all the levels
should be used equally.
8. Change "audioctl name" to "OPL3-SA3" and "audioctl version"
to the version of the chip.
tsutsui