- Use swi_* function names.
- Use void * to hold cookies to handlers instead of struct intrhand *.
- In sio.c, use 'driver_name' instead of "sio" as the name of the driver
lock to minimize diffs with cy(4).
folks.
My guess is that reducing the number of tags is just masking the real
problem for the PR submitter. I'll re-open the PR and see if I can work
with the submitter to diagnose the problem.
PR: 21139
Return ENOTSUP for any opcode that is not supported by the XPT
device.
Add back a missing local declaration that seems to have been deleted
by my last commit.
The XPT uses this to prevent tags from being used on parallel SCSI
interfaces immediately after a bus reset or BDR so that controllers
have an oportunity to renegotiate without tag messages in the way.
Somehow this got disabled... the functionality has been here for
quite some time.
Noticed by: my SCSI bus analyzer
type of software interrupt. Roughly, what used to be a bit in spending
now maps to a swi thread. Each thread can have multiple handlers, just
like a hardware interrupt thread.
- Instead of using a bitmask of pending interrupts, we schedule the specific
software interrupt thread to run, so spending, NSWI, and the shandlers
array are no longer needed. We can now have an arbitrary number of
software interrupt threads. When you register a software interrupt
thread via sinthand_add(), you get back a struct intrhand that you pass
to sched_swi() when you wish to schedule your swi thread to run.
- Convert the name of 'struct intrec' to 'struct intrhand' as it is a bit
more intuitive. Also, prefix all the members of struct intrhand with
'ih_'.
- Make swi_net() a MI function since there is now no point in it being
MD.
Submitted by: cp
- Make softinterrupts (SWI's) almost completely MI, and divorce them
completely from the x86 hardware interrupt code.
- The ihandlers array is now gone. Instead, there is a MI shandlers array
that just contains SWI handlers.
- Most of the former machine/ipl.h files have moved to a new sys/ipl.h.
- Stub out all the spl*() functions on all architectures.
Submitted by: dfr
newbus for referencing device interrupt handlers.
- Move the 'struct intrec' type which describes interrupt sources into
sys/interrupt.h instead of making it just be a x86 structure.
- Don't create 'ithd' and 'intrec' typedefs, instead, just use 'struct ithd'
and 'struct intrec'
- Move the code to translate new-bus interrupt flags into an interrupt thread
priority out of the x86 nexus code and into a MI ithread_priority()
function in sys/kern/kern_intr.c.
- Remove now-uneeded x86-specific headers from sys/dev/ata/ata-all.c and
sys/pci/pci_compat.c.
Make the umass driver depend on this module.
Makes it possible to compile the kernel without SCSI support and load it
when for example a USB floppy is conencted.
Bring back the CAM_NEGOTIATE ccb flag. This flag indicates
that SPI transfer negotiation should occur concurrently with the
execution of this CCB. The flag is not yet used by the XPT but
is required for proper support of multi-initiator configurations
where topology scans cannot rely on a bus reset to invalidate
prior negotiations.
cam_xpt.c:
Don't allow DT transmission rates to be specified for devices
that don't have the DT feature listed in their inquiry data.
kernel. Justin agress that there is no other reasonable alternative to
do automatic rescans on connect.
The problem is that when a new device attaches to a SIM (SCSI host
controller) we need to send a XPT_SCAN_BUS command to the SIM using
xpt_action. This requires however that there is a peripheral available
to take the command (otherwise xpt_done and later bomb). The RESCAN
ioctl uses the same periph.
This enables a USB mass storage drive to do an automatic rescan on
connection of the drive.
The automatic dropping of a CAM entry on disconnection was already
working (asynchronous event).
The next thing to do is find someone to commit a change to vpo to do the
same thing. Just port umass_cam_rescan and friends across to that
driver.
Approved by: gibbs
dynamic resource tables rather than relying on a duplicated cam-specific
table generated by config(8) in ioconf.c. This was a major holdup to
getting loader / userconfig driven configuration of scsi wiring.
structure. Remove usage of the (now gone) pd_type tag of same.
Add an extra probing state such that if we successfully run an
initial inquiry (36 bytes), rerun another one with a longer data
size as informed by the 'additional length' field in the first
returned inquiry data (making sure not to get bigger than the
actual scsi_inquiry_data structure- which has also been modified-
see separate checkin of scsi_all.h). This allows devices such
as SAF-TE devices (which have identifying marks in offsets 48-53
in inquiry data) to be successfully found without special case
inquiry commands. There are also a lot of other things such as
version codes that are coming in in the SPC2 specification that it
would be useful to get our hands on.
Reviewed by: gibbs@freebsd.org, ken@freebsd.org
Clean up node creation in the EDT so that initialization follows member
declaration.
Sort registered paths by pathid so that we probe busses in order of
ascending pathid. This makes hardwiring of busses without wiring
individual targets do what the user expects. (submitted by tegge@FreeBSD.org)
Fix an EDT node leak. Target nodes would never go away.
Implement xpt_bus_deregister().
(prodded by some patches from T. Ichinoseki, but implemented differently.)
camcontrol was setup to use the old scheme of going through the xpt(4)
device, which never worked properly (and has been disabled for a while).
camcontrol now sends BDRs through the pass(4) device, and XPT_RESET_DEV
CCBs are put on the device queue in the transport layer, as they should be.
Submitted by: luoqi
Reviewed by: ken
- Move intrhook stuff into kernel.h
- Remove all occurrences of #device <device.h>
- Add kernel.h were necessary (nowhere)
- delete device.h
This file contained the structures for cfdata (old style config) and is no
longer used. It was included by most drivers.
It confuses the remote debugger as the definition of 'struct device' in
device.h is found before the one in bus_private.h.
have been there in the first place. A GENERIC kernel shrinks almost 1k.
Add a slightly different safetybelt under nostop for tty drivers.
Add some missing FreeBSD tags
Diskslice/label code not yet handled.
Vinum, i4b, alpha, pc98 not dealt with (left to respective Maintainers)
Add the correct hook for devfs to kern_conf.c
The net result of this excercise is that a lot less files depends on DEVFS,
and devtoname() gets more sensible output in many cases.
A few drivers had minor additional cleanups performed relating to cdevsw
registration.
A few drivers don't register a cdevsw{} anymore, but only use make_dev().
Clear residuals for XPT_TARGET_IO/XPT_CONT_TARGET_IO calls just
as we do for XPT_SCSI_IO calls.
Make xpt_release_devq a proper reciprocal of xpt_freeze_devq by
allowing the caller to decrement the count more than once per call.
Change the semantics of xpt_path_cmp to return 1 for a match
with a wildcard from path1 and 2 for a match with wildcards
from path2. This change doesn't affect most callers as they
only check for >=0 (exact match or one containing a wildcard).
When cleaning up a device node, ensure that there are no timeouts
outstanding that reference it.
is quirked for allowing it. This will allow SCSI cards to specify their true
correct lun width (32 for Qlogic SCSI, 16 or 65536 for Qlogic Fibre Channel)
without crippling the system because of f/w breakage of a lot of drives.
Reviewed by: gibbs@freebsd.org
The cdevsw_add() function now finds the major number(s) in the
struct cdevsw passed to it. cdevsw_add_generic() is no longer
needed, cdevsw_add() does the same thing.
cdevsw_add() will print an message if the d_maj field looks bogus.
Remove nblkdev and nchrdev variables. Most places they were used
bogusly. Instead check a dev_t for validity by seeing if devsw()
or bdevsw() returns NULL.
Move bdevsw() and devsw() functions to kern/kern_conf.c
Bump __FreeBSD_version to 400006
This commit removes:
72 bogus makedev() calls
26 bogus SYSINIT functions
if_xe.c bogusly accessed cdevsw[], author/maintainer please fix.
I4b and vinum not changed. Patches emailed to authors. LINT
probably broken until they catch up.
Reformat and initialize correctly all "struct cdevsw".
Initialize the d_maj and d_bmaj fields.
The d_reset field was not removed, although it is never used.
I used a program to do most of this, so all the files now use the
same consistent format. Please keep it that way.
Vinum and i4b not modified, patches emailed to respective authors.
The XPT doesn't have a problem with this itself, but some controllers
drivers may have been caught off guard by the old behavior.
XPT_CONT_TARGET_IO is also a valid ccb type for cam_periph_unmapmem.
types allow the reporting of error counts and other statistics. Currently
we provide information on the last BDR or bus reset as well as active
transaction inforamtion, but this will be expanded as more information is
added to aid in error recovery.
Use the 'last reset' information to better handle bus settle delays.
Peripheral drivers now control whether a bus settle delay occurs and
for how long. This allows target mode peripheral drivers to avoid
having their device queue frozen by the XPT for what shoudl only be
initiator type behavior.
Don't perform a bus reset if the target device is incapable of performing
transfer negotiation (e.g. Fiber Channel).
If we don't perform a bus reset but the controller is capable of transfer
negotiations, force negotiations on the first transaction to go to the
device. This ensures that we aren't tripped up by a left over negotiation
from the prom, BIOS, loader, etc.
Add a default async handler funstion to cam_periph.c to remove duplicated
code in all initiator type peripheral drivers.
Allow mapping of XPT_CONT_TARGET_IO ccbs from userland. They are
itentical to XPT_SCSI_IO ccbs as far as data mapping is concerned.
