Commit Graph

28 Commits

Author SHA1 Message Date
Conrad Meyer
e2e050c8ef Extract eventfilter declarations to sys/_eventfilter.h
This allows replacing "sys/eventfilter.h" includes with "sys/_eventfilter.h"
in other header files (e.g., sys/{bus,conf,cpu}.h) and reduces header
pollution substantially.

EVENTHANDLER_DECLARE and EVENTHANDLER_LIST_DECLAREs were moved out of .c
files into appropriate headers (e.g., sys/proc.h, powernv/opal.h).

As a side effect of reduced header pollution, many .c files and headers no
longer contain needed definitions.  The remainder of the patch addresses
adding appropriate includes to fix those files.

LOCK_DEBUG and LOCK_FILE_LINE_ARG are moved to sys/_lock.h, as required by
sys/mutex.h since r326106 (but silently protected by header pollution prior
to this change).

No functional change (intended).  Of course, any out of tree modules that
relied on header pollution for sys/eventhandler.h, sys/lock.h, or
sys/mutex.h inclusion need to be fixed.  __FreeBSD_version has been bumped.
2019-05-20 00:38:23 +00:00
Pedro F. Giffuni
718cf2ccb9 sys/dev: further adoption of SPDX licensing ID tags.
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
2017-11-27 14:52:40 +00:00
John Baldwin
b04e4c122b Remove FreeBSD 4.x compat shims. Verified by md5. 2012-09-26 14:17:14 +00:00
John Baldwin
0fca6f8bf5 Add locking to mlx(4) to make it MPSAFE along with some other fixes:
- Use callout(9) rather than timeout(9).
- Add a mutex as an I/O lock that protects the adapter and is used
  for the I/O path.
- Add an sx lock as a configuration lock that protects the relationship
  of configured volumes.
- Freeze the request queue when a DMA load is deferred with EINPROGRESS
  and unfreeze the queue when the DMA callback is invoked.
- Explicitly poll the hardware while waiting to submit a command to
  allow completed commands to free up slots in the command ring.
- Remove driver-wide 'initted' variable from mlx_*_fw_handshake() routines.
  That state should be per-controller instead.  Add it as an argument
  since the first caller knows when it is the first caller.
- Remove explicit bus_space tag/handle and use bus_*() rather than
  bus_space_*().
- Move duplicated PCI device ID probing into a  mlx_pci_match() routine.
- Don't check for PCIM_CMD_MEMEN (the PCI bus will enable that when
  allocating the resource) and use pci_enable_busmaster() rather than
  manipulating the register directly.

Tested by:	no one despite multiple requests (hope it works)
2012-09-17 15:27:30 +00:00
Xin LI
0f3fae6159 Correct a typo.
Reported by:	Sascha Wildner <swildner dragonflybsd org>
Reviewed by:	scottl
MFC after:	3 days
2012-08-03 00:11:13 +00:00
Scott Long
52c9ce25d8 Separate the parallel scsi knowledge out of the core of the XPT, and
modularize it so that new transports can be created.

Add a transport for SATA

Add a periph+protocol layer for ATA

Add a driver for AHCI-compliant hardware.

Add a maxio field to CAM so that drivers can advertise their max
I/O capability.  Modify various drivers so that they are insulated
from the value of MAXPHYS.

The new ATA/SATA code supports AHCI-compliant hardware, and will override
the classic ATA driver if it is loaded as a module at boot time or compiled
into the kernel.  The stack now support NCQ (tagged queueing) for increased
performance on modern SATA drives.  It also supports port multipliers.

ATA drives are accessed via 'ada' device nodes.  ATAPI drives are
accessed via 'cd' device nodes.  They can all be enumerated and manipulated
via camcontrol, just like SCSI drives.  SCSI commands are not translated to
their ATA equivalents; ATA native commands are used throughout the entire
stack, including camcontrol.  See the camcontrol manpage for further
details.  Testing this code may require that you update your fstab, and
possibly modify your BIOS to enable AHCI functionality, if available.

This code is very experimental at the moment.  The userland ABI/API has
changed, so applications will need to be recompiled.  It may change
further in the near future.  The 'ada' device name may also change as
more infrastructure is completed in this project.  The goal is to
eventually put all CAM busses and devices until newbus, allowing for
interesting topology and management options.

Few functional changes will be seen with existing SCSI/SAS/FC drivers,
though the userland ABI has still changed.  In the future, transports
specific modules for SAS and FC may appear in order to better support
the topologies and capabilities of these technologies.

The modularization of CAM and the addition of the ATA/SATA modules is
meant to break CAM out of the mold of being specific to SCSI, letting it
grow to be a framework for arbitrary transports and protocols.  It also
allows drivers to be written to support discrete hardware without
jeopardizing the stability of non-related hardware.  While only an AHCI
driver is provided now, a Silicon Image driver is also in the works.
Drivers for ICH1-4, ICH5-6, PIIX, classic IDE, and any other hardware
is possible and encouraged.  Help with new transports is also encouraged.

Submitted by:	scottl, mav
Approved by:	re
2009-07-10 08:18:08 +00:00
Poul-Henning Kamp
89c9c53da0 Do the dreaded s/dev_t/struct cdev */
Bump __FreeBSD_version accordingly.
2004-06-16 09:47:26 +00:00
Poul-Henning Kamp
0b7ed341e1 Change the disk(9) API in order to make device removal more robust.
Previously the "struct disk" were owned by the device driver and this
gave us problems when the device disappared and the users of that device
were not immediately disappearing.

Now the struct disk is allocate with a new call, disk_alloc() and owned
by geom_disk and just abandonned by the device driver when disk_create()
is called.

Unfortunately, this results in a ton of "s/\./->/" changes to device
drivers.

Since I'm doing the sweep anyway, a couple of other API improvements
have been carried out at the same time:

The Giant awareness flag has been flipped from DISKFLAG_NOGIANT to
DISKFLAG_NEEDSGIANT

A version number have been added to disk_create() so that we can detect,
report and ignore binary drivers with old ABI in the future.

Manual page update to follow shortly.
2004-02-18 21:36:53 +00:00
Scott Long
1b4404f9ab Prepare for locking mlx(4) by cleaning up the use of busdma. No real
functional changes should result from this.
2003-09-02 08:30:31 +00:00
Poul-Henning Kamp
60794e0478 Centralize the devstat handling for all GEOM disk device drivers
in geom_disk.c.

As a side effect this makes a lot of #include <sys/devicestat.h>
lines not needed and some biofinish() calls can be reduced to
biodone() again.
2003-03-08 08:01:31 +00:00
Poul-Henning Kamp
b2fe65c5be NO_GEOM cleanup:
Move to "struct disk*" centric API.
Retire major #131 (mlxd)
2003-02-25 07:35:41 +00:00
Poul-Henning Kamp
f90c382c0c Make FreeBSD "struct disklabel" agnostic, step 311 of 723:
Rename diskerr() to disk_err() for naming consistency.

Drop the by now entirely useless struct disklabel argument.

Add a flag argument for new-line termination.

Fix a couple of printf-format-casts to %j instead of %l.

Correctly print the name of all bio commands.

Move the function from subr_disklabel.c to subr_disk.c,
and from <sys/disklabel.h> to <sys/disk.h>.

Use the new disk_err() throughout, #include <sys/disk.h> as needed.

Bump __FreeBSD_version for the sake of the aac disk drivers #ifdefs.

Remove unused disklabel members of softc for aac, amr and mlx, which seem
to originally have been intended for diskerr() use, but which only rotted
and got Copy&Pasted at least two times to many.

Sponsored by:   DARPA & NAI Labs.
2002-09-20 12:52:03 +00:00
David E. O'Brien
6e551fb628 Update to C99, s/__FUNCTION__/__func__/,
also don't use ANSI string concatenation.
2001-12-10 08:09:49 +00:00
Julian Elischer
b40ce4165d KSE Milestone 2
Note ALL MODULES MUST BE RECOMPILED
make the kernel aware that there are smaller units of scheduling than the
process. (but only allow one thread per process at this time).
This is functionally equivalent to teh previousl -current except
that there is a thread associated with each process.

Sorry john! (your next MFC will be a doosie!)

Reviewed by: peter@freebsd.org, dillon@freebsd.org

X-MFC after:    ha ha ha ha
2001-09-12 08:38:13 +00:00
Mike Smith
15fd5d220f Driver modifications consistent with my other drivers to facilitate
the use of a single set of sources across 4.x and 5.x branches.

No significant code changes.
2001-06-25 04:32:31 +00:00
Matthew N. Dodd
9b11c7ba44 Avoid hardcoding the 'rid' and 'type' of the MEM/IOPORT resource.
Store the 'rid' and 'type' in the softc and use them in mlx.c:mlx_free().

EISA and MCA front ends will require this.

Approved by:	 msmith
2000-11-28 06:17:32 +00:00
Jake Burkholder
e39756439c Back out the previous change to the queue(3) interface.
It was not discussed and should probably not happen.

Requested by:		msmith and others
2000-05-26 02:09:24 +00:00
Jake Burkholder
740a1973a6 Change the way that the queue(3) structures are declared; don't assume that
the type argument to *_HEAD and *_ENTRY is a struct.

Suggested by:	phk
Reviewed by:	phk
Approved by:	mdodd
2000-05-23 20:41:01 +00:00
Mike Smith
baff09db2c Change the way that scatter/gather list tables are allocated so that we
can use all of the s/g entries available on smaller cards.  This is
necessary if we want to be able to handle a non-page-aligned 64k transfer
on 2.x and 3.x firmware.

Fix a missing splx() that may have left us at splbio() for longer than
desired.

Reduce shadowing of controller-supplied parameters a little.
2000-05-06 08:54:33 +00:00
Mike Smith
5d278f5cf3 One minor bugfix:
- Free resources in all the possible attachment failure cases.

One critical bugfix:

 - Fix a race where it was possible to get out of synch with the log
   messages from the controller, if the controller hung up for any
   period of time (eg. while resetting a SCSI bus).  This would result
   in an endless string of console errors, bringing the machine to a
   halt.
2000-04-20 23:52:33 +00:00
Poul-Henning Kamp
8177437d85 Complete the bio/buf divorce for all code below devfs::strategy
Exceptions:
        Vinum untouched.  This means that it cannot be compiled.
        Greg Lehey is on the case.

        CCD not converted yet, casts to struct buf (still safe)

        atapi-cd casts to struct buf to examine B_PHYS
2000-04-15 05:54:02 +00:00
Mike Smith
421f2f7d74 Add features required for basic userland management utility:
- implement user-initiated background drive rebuild
 - implement user-initiated background consistency check
 - log controller-initiated background rebuild/check operations

Try to fix the elusive "invalid log operation" bug, and panic if we do
hit this one in the hopes of getting better information.

Tidy up diagnostic messages.

Try to use disk_create/disk_destroy correctly.  This isn't working
properly yet, but it's not clear whose fault that is.
2000-04-11 02:52:46 +00:00
Mike Smith
da8bb3a3bf Update to the latest development version of the Mylex driver. Changes in
this version include:

 - Support for version 2.x firmware (2.42 or later recommended).  This
   means we are the only open-source driver supporting these adapters.
   This code has only been tested on a Digital KZPCA adapter in an Alpha
   system, but is believed to be correct.  NOTE: EISA adapters are not
   yet supported.

 - Support the BIOS/Firmware initialisation handshake protocol.  This
   allows the driver to bring the card up to operational state even if
   the BIOS can't be run (eg. if it's an x86 BIOS in an Alpha system).

 - A working command pasthrough interface.  This allows a user-space
   configuration tool (under development) to issue arbitrary commands
   to the controller or to devices in the system.
2000-03-18 02:01:37 +00:00
Mike Smith
9eee27f16d Updates resulting from new documentation from Mylex and some cleaning:
- Don't keep private copies of some of the data fields from the
   ENQUIRY and ENQUIRY2 commands.  Instead, standardise on the ENQUIRY2
   command for initial adapter information, and keep a copy of the entire
   structure.  Refer to it where appropriate.

 - Move all of the controller description functionality into a new
   function.  Print lots more controller data if bootverbose is set.
   Add knowledge of the DAC960 PR, PT, PTL0 and PRL controllers, rename
   the 960PTL -> PTL0 and 1100P -> 1100PVX.

 - Correctly terminate an error message.

The controller interface procedures have been reviewed against the
Mylex-supplied documentation; no changes appear necessary at this
time.
1999-12-22 01:21:28 +00:00
Mike Smith
5792b7fe0b Major update to the Mylex DAC960 driver adding new hardware support
and fixing some major bugs.

 - Add support for the v5 firmware interface, used by the DAC1164P
   (tested) and AcceleRAID 352 (untested but should work).  We now cover
   all of the Mylex family's protocols except for v2 (used by EISA and
   Alpha-compatible cards).

 - Fix an accounting bug which resulted in endless 'poll still busy'
   messages.  In situations of high controller load the count of poll
   commands could be incremented without actually successfully launching
   a command.  This totally removes the accounting for status poll
   commnads; it was its own worst enemy.

 - Add some simple reentry prevention locks to processing of the waiting
   and completed command queues to prevent races which could result in
   I/O being done or completed twice (both are fatal).  This highlights
   a need for simple locking primitives in both the UP and SMP kernels.

 - Streamline the handling of command completion to reduce the amount of
   redundant work being done.  Remove the code which tests for commands
   that have gone missing in action; nobody has ever seen one of these
   and it wouldn't have worked properly anyhow.

 - Handle disconnection of drives from the controller in the detach,
   not shutdown method.  This avoids problems flushing the cache in
   a panic when a drive is mounted.

 - Don't call bus_generic_detach when disconnecting drives; it doesn't
   actually do anything useful.

 - Increment the log message index regardless of whether we actually
   retrieved one or not.  If we run into a message that we can't fetch,
   we don't want to spin endlessly complaining about the fact.

 - Don't assume that interrupts will work when we're flushing the
   controller.  We may think they are enabled, but in eg. a panic
   situation the controller may not be able to deliver an interrupt.
1999-12-11 00:00:13 +00:00
Mike Smith
4b006d7bb7 Move some hardware-related items to the hardware-related header.
Shift to using the same queueing strategy that the amr driver uses.
Some simple tests indicate that we use about 2% of the CPU at around
500tps with the controller completely saturated with I/O.
1999-10-26 23:20:43 +00:00
Mike Smith
f6b84b08c9 Add support for the version 4 firmware interface and the DAC960 PG and
PJ cards.  This will probably also support the AcceleRAID and
eXtremeRAID cards, but nobody has volunteered one for testing, so I
haven't enabled their PCI device IDs.

Slightly clean up communication between the disk devices and the
controller device as per new practice, and move some more register-
related items int mlxreg.h from mlxvar.h.

Remove some unnecessary read-modify-write operations to the card
control registers; they don't behave like that.

Increase the status polling interval to 10 seconds.  It's still possible
to load the card up to the point where a status poll will find the
previous poll still running, but this will reduce the incidence of
complaints.
1999-10-14 02:54:06 +00:00
Mike Smith
1ac4b82b11 This is a driver for the Mylex DAC960 family of integrated RAID
controllers.  It currently supports the P, PL, PD and PU variants,
with more to be supported shortly.
1999-10-07 02:20:32 +00:00