DragonFly BSD

CVS log for src/sys/dev/raid/vinum/vinumvar.h

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Revision 1.11.2.1: download - view: text, markup, annotated - select for diffs
Tue Jul 31 22:40:50 2007 UTC (6 years, 8 months ago) by dillon
Branches: DragonFly_RELEASE_1_10
CVS tags: DragonFly_RELEASE_1_10_Slip
Diff to: previous 1.11: preferred, unified; next MAIN 1.12: preferred, unified
Changes since revision 1.11: +3 -1 lines
Synchronize all changes made in HEAD to date with the 1.10 release branch.

* usbdevs update
* header file fixes
* vinum root
* vinum device I/O fixes
* MD fixes
* New PCI ids for netif rum and ural
* New USB uplcom ids
* linux exec memory leak
* devclass ordering fixes (sound devices)
* rate-limited kprintf support (filesystem full console spams)
* msdosfs fixes
* Manual page work

Revision 1.12: download - view: text, markup, annotated - select for diffs
Tue Jul 31 18:13:01 2007 UTC (6 years, 8 months ago) by dillon
Branches: MAIN
CVS tags: HEAD, DragonFly_RELEASE_2_0_Slip, DragonFly_RELEASE_2_0, DragonFly_RELEASE_1_12_Slip, DragonFly_RELEASE_1_12, DragonFly_Preview
Diff to: previous 1.11: preferred, unified
Changes since revision 1.11: +3 -1 lines
Fix vinum.  Vinum illegally uses device ops such as dev_dopen(),
dev_dclose(), and dev_dstrategy() without following the restrictions and
requirements for those calls.  It does not properly check D_TRACKCLOSE
and does not properly limit DMA.

Access the low level device via the vnode subsystem instead of the device
subsystem.  Use new calls to synthesize appropriate vnodes based on the
requested device name and remove all the manual major/minor conversion junk.

When booting with a vinum root vinum will synthesize appropriate vnodes
to access devices.  If a root mount already exists vinum will simply
open the device vnode via the filesystem.

Reported-by: "Simon 'corecode' Schubert" <bugs@crater.dragonflybsd.org>,
	     Chris Turner <c.turner@199technologies.org>

Revision 1.11: download - view: text, markup, annotated - select for diffs
Thu Jun 7 22:58:38 2007 UTC (6 years, 10 months ago) by corecode
Branches: MAIN
Branch point for: DragonFly_RELEASE_1_10
Diff to: previous 1.10: preferred, unified
Changes since revision 1.10: +1 -1 lines
Get rid of disklabel faking/processing.

Revision 1.10: download - view: text, markup, annotated - select for diffs
Tue May 15 17:50:56 2007 UTC (6 years, 11 months ago) by dillon
Branches: MAIN
Diff to: previous 1.9: preferred, unified
Changes since revision 1.9: +0 -1 lines
Continue untangling the disklabel.  Reorganize struct partinfo and the
DIOCGPART ioctl to extract the required information directly, and fix
the DIOCGPART ioctl direction so userland can use it.

This removes numerous disklabel references, particularly from the filesystem
code which was doing silly indirections just to figure out the sector size.

NOTE: The absolute byte offset of the slice or partition (relative to the
base of the raw disk) is also made available, but is not currently used
by the kernel.

Revision 1.9: download - view: text, markup, annotated - select for diffs
Sun Sep 10 01:26:36 2006 UTC (7 years, 7 months ago) by dillon
Branches: MAIN
CVS tags: DragonFly_RELEASE_1_8_Slip, DragonFly_RELEASE_1_8
Diff to: previous 1.8: preferred, unified
Changes since revision 1.8: +1 -1 lines
Change the kernel dev_t, representing a pointer to a specinfo structure,
to cdev_t.  Change struct specinfo to struct cdev.  The name 'cdev' was taken
from FreeBSD.  Remove the dev_t shim for the kernel.

This commit generally removes the overloading of 'dev_t' between userland and
the kernel.

Also fix a bug in libkvm where a kernel dev_t (now cdev_t) was not being
properly converted to a userland dev_t.

Revision 1.8: download - view: text, markup, annotated - select for diffs
Fri Jul 28 02:17:38 2006 UTC (7 years, 8 months ago) by dillon
Branches: MAIN
Diff to: previous 1.7: preferred, unified
Changes since revision 1.7: +3 -3 lines
MASSIVE reorganization of the device operations vector.  Change cdevsw
to dev_ops.  dev_ops is a syslink-compatible operations vector structure
similar to the vop_ops structure used by vnodes.

Remove a huge number of instances where a thread pointer is still being
passed as an argument to various device ops and other related routines.
The device OPEN and IOCTL calls now take a ucred instead of a thread pointer,
and the CLOSE call no longer takes a thread pointer.

Revision 1.7: download - view: text, markup, annotated - select for diffs
Sun Jul 16 22:39:42 2006 UTC (7 years, 9 months ago) by dillon
Branches: MAIN
CVS tags: DragonFly_RELEASE_1_6_Slip, DragonFly_RELEASE_1_6
Diff to: previous 1.6: preferred, unified
Changes since revision 1.6: +1 -0 lines
Use pbufs instead of ebufs.

Submitted-by: "Simon 'corecode' Schubert" <corecode@fs.ei.tum.de>

Revision 1.6: download - view: text, markup, annotated - select for diffs
Fri Feb 17 19:18:06 2006 UTC (8 years, 2 months ago) by dillon
Branches: MAIN
Diff to: previous 1.5: preferred, unified
Changes since revision 1.5: +1 -1 lines
Make the entire BUF/BIO system BIO-centric instead of BUF-centric.  Vnode
and device strategy routines now take a BIO and must pass that BIO to
biodone().  All code which previously managed a BUF undergoing I/O now
manages a BIO.

The new BIO-centric algorithms allow BIOs to be stacked, where each layer
represents a block translation, completion callback, or caller or device
private data.  This information is no longer overloaded within the BUF.
Translation layer linkages remain intact as a 'cache' after I/O has completed.

The VOP and DEV strategy routines no longer make assumptions as to which
translated block number applies to them.  The use the block number in the
BIO specifically passed to them.

Change the 'untranslated' constant to NOOFFSET (for bio_offset), and
(daddr_t)-1 (for bio_blkno).  Rip out all code that previously set the
translated block number to the untranslated block number to indicate
that the translation had not been made.

Rip out all the cluster linkage fields for clustered VFS and clustered
paging operations.  Clustering now occurs in a private BIO layer using
private fields within the BIO.

Reformulate the vn_strategy() and dev_dstrategy() abstraction(s).  These
routines no longer assume that bp->b_vp == the vp of the VOP operation, and
the dev_t is no longer stored in the struct buf.  Instead, only the vp passed
to vn_strategy() (and related *_strategy() routines for VFS ops), and
the dev_t passed to dev_dstrateg() (and related *_strategy() routines for
device ops) is used by the VFS or DEV code.  This will allow an arbitrary
number of translation layers in the future.

Create an independant per-BIO tracking entity, struct bio_track, which
is used to determine when I/O is in-progress on the associated device
or vnode.

NOTE: Unlike FreeBSD's BIO work, our struct BUF is still used to hold
the fields describing the data buffer, resid, and error state.

Major-testing-by: Stefan Krueger

Revision 1.5: download - view: text, markup, annotated - select for diffs
Wed May 19 22:52:48 2004 UTC (9 years, 11 months ago) by dillon
Branches: MAIN
CVS tags: DragonFly_Stable, DragonFly_Snap29Sep2004, DragonFly_Snap13Sep2004, DragonFly_RELEASE_1_4_Slip, DragonFly_RELEASE_1_4, DragonFly_RELEASE_1_2_Slip, DragonFly_RELEASE_1_2, DragonFly_1_0_REL, DragonFly_1_0_RC1, DragonFly_1_0A_REL
Diff to: previous 1.4: preferred, unified
Changes since revision 1.4: +36 -13 lines
Device layer rollup commit.

* cdevsw_add() is now required.  cdevsw_add() and cdevsw_remove() may specify
  a mask/match indicating the range of supported minor numbers.  Multiple
  cdevsw_add()'s using the same major number, but distinctly different
  ranges, may be issued.  All devices that failed to call cdevsw_add() before
  now do.

* cdevsw_remove() now automatically marks all devices within its supported
  range as being destroyed.

* vnode->v_rdev is no longer resolved when the vnode is created.  Instead,
  only v_udev (a newly added field) is resolved.  v_rdev is resolved when
  the vnode is opened and cleared on the last close.

* A great deal of code was making rather dubious assumptions with regards
  to the validity of devices associated with vnodes, primarily due to
  the persistence of a device structure due to being indexed by (major, minor)
  instead of by (cdevsw, major, minor).  In particular, if you run a program
  which connects to a USB device and then you pull the USB device and plug
  it back in, the vnode subsystem will continue to believe that the device
  is open when, in fact, it isn't (because it was destroyed and recreated).

  In particular, note that all the VFS mount procedures now check devices
  via v_udev instead of v_rdev prior to calling VOP_OPEN(), since v_rdev
  is NULL prior to the first open.

* The disk layer's device interaction has been rewritten.  The disk layer
  (i.e. the slice and disklabel management layer) no longer overloads
  its data onto the device structure representing the underlying physical
  disk.  Instead, the disk layer uses the new cdevsw_add() functionality
  to register its own cdevsw using the underlying device's major number,
  and simply does NOT register the underlying device's cdevsw.  No
  confusion is created because the device hash is now based on
  (cdevsw,major,minor) rather then (major,minor).

  NOTE: This also means that underlying raw disk devices may use the entire
  device minor number instead of having to reserve the bits used by the disk
  layer, and also means that can we (theoretically) stack a fully
  disklabel-supported 'disk' on top of any block device.

* The new reference counting scheme prevents this by associating a device
  with a cdevsw and disconnecting the device from its cdevsw when the cdevsw
  is removed.  Additionally, all udev2dev() lookups run through the cdevsw
  mask/match and only successfully find devices still associated with an
  active cdevsw.

* Major work on MFS:  MFS no longer shortcuts vnode and device creation.  It
  now creates a real vnode and a real device and implements real open and
  close VOPs.  Additionally, due to the disk layer changes, MFS is no longer
  limited to 255 mounts.  The new limit is 16 million.  Since MFS creates a
  real device node, mount_mfs will now create a real /dev/mfs<PID> device
  that can be read from userland (e.g. so you can dump an MFS filesystem).

* BUF AND DEVICE STRATEGY changes.  The struct buf contains a b_dev field.
  In order to properly handle stacked devices we now require that the b_dev
  field be initialized before the device strategy routine is called.  This
  required some additional work in various VFS implementations.  To enforce
  this requirement, biodone() now sets b_dev to NODEV.  The new disk layer
  will adjust b_dev before forwarding a request to the actual physical
  device.

* A bug in the ISO CD boot sequence which resulted in a panic has been fixed.

Testing by: lots of people, but David Rhodus found the most aggregious bugs.

Revision 1.4: download - view: text, markup, annotated - select for diffs
Thu Aug 7 21:17:10 2003 UTC (10 years, 8 months ago) by dillon
Branches: MAIN
Diff to: previous 1.3: preferred, unified
Changes since revision 1.3: +1 -1 lines
kernel tree reorganization stage 1: Major cvs repository work (not logged as
commits) plus a major reworking of the #include's to accomodate the
relocations.

    * CVS repository files manually moved.  Old directories left intact
      and empty (temporary).

    * Reorganize all filesystems into vfs/, most devices into dev/,
      sub-divide devices by function.

    * Begin to move device-specific architecture files to the device
      subdirs rather then throwing them all into, e.g. i386/include

    * Reorganize files related to system busses, placing the related code
      in a new bus/ directory.  Also move cam to bus/cam though this may
      not have been the best idea in retrospect.

    * Reorganize emulation code and place it in a new emulation/ directory.

    * Remove the -I- compiler option in order to allow #include file
      localization, rename all config generated X.h files to use_X.h to
      clean up the conflicts.

    * Remove /usr/src/include (or /usr/include) dependancies during the
      kernel build, beyond what is normally needed to compile helper
      programs.

    * Make config create 'machine' softlinks for architecture specific
      directories outside of the standard <arch>/include.

    * Bump the config rev.

    WARNING! after this commit /usr/include and /usr/src/sys/compile/*
    should be regenerated from scratch.

Revision 1.3: download - view: text, markup, annotated - select for diffs
Mon Jul 21 05:50:38 2003 UTC (10 years, 9 months ago) by dillon
Branches: MAIN
Diff to: previous 1.2: preferred, unified
Changes since revision 1.2: +1 -2 lines
DEV messaging stage 1/4: Rearrange struct cdevsw and add a message port
and auto-queueing mask.  The mask will tell us which message functions
can be safely queued to another thread and which still need to run in the
context of the caller.   Primary configuration fields (name, cmaj, flags,
port, autoq mask) are now at the head of the structure.  Function vectors,
which may eventually go away, are at the end.  The port and autoq fields
are non-functional in this stage.

The old BDEV device major number support has also been removed from cdevsw,
and code has been added to translate the bootdev passed from the boot code
(the boot code has always passed the now defunct block device major numbers
and we obviously need to keep that compatibility intact).

Revision 1.2: download - view: text, markup, annotated - select for diffs
Tue Jun 17 04:28:33 2003 UTC (10 years, 10 months ago) by dillon
Branches: MAIN
CVS tags: PRE_MP
Diff to: previous 1.1: preferred, unified
Changes since revision 1.1: +1 -0 lines
Add the DragonFly cvs id and perform general cleanups on cvs/rcs/sccs ids.  Most
ids have been removed from !lint sections and moved into comment sections.

Revision 1.1: download - view: text, markup, annotated - select for diffs
Tue Jun 17 02:54:32 2003 UTC (10 years, 10 months ago) by dillon
Branches: MAIN
CVS tags: FREEBSD_4_FORK
import from FreeBSD RELENG_4 1.32.2.4

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