DragonFly BSD

CVS log for src/sys/dev/video/pcvt/i386/Attic/pcvt_hdr.h

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Default branch: MAIN

Revision 1.7
Sat May 7 17:38:33 2005 UTC (8 years, 11 months ago) by swildner
Branches: MAIN
CVS tags: HEAD
Changes since revision 1.6: +1 -1 lines
Remove PCVT kernel part and mop up.

Revision 1.6: download - view: text, markup, annotated - select for diffs
Sat Sep 18 20:23:04 2004 UTC (9 years, 7 months ago) by dillon
Branches: MAIN
CVS tags: DragonFly_Stable, DragonFly_Snap29Sep2004, DragonFly_RELEASE_1_2_Slip, DragonFly_RELEASE_1_2
Diff to: previous 1.5: preferred, unified
Changes since revision 1.5: +1 -0 lines
timeout/untimeout ==> callout_*

Revision 1.5: download - view: text, markup, annotated - select for diffs
Wed May 19 22:52:54 2004 UTC (9 years, 11 months ago) by dillon
Branches: MAIN
CVS tags: DragonFly_Snap13Sep2004, DragonFly_1_0_REL, DragonFly_1_0_RC1, DragonFly_1_0A_REL
Diff to: previous 1.4: preferred, unified
Changes since revision 1.4: +1 -0 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

* 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
Fri Feb 13 01:45:15 2004 UTC (10 years, 2 months ago) by joerg
Branches: MAIN
Diff to: previous 1.3: preferred, unified
Changes since revision 1.3: +1 -1 lines
Add __DragonFly__

Revision 1.3: download - view: text, markup, annotated - select for diffs
Thu Aug 7 21:17:16 2003 UTC (10 years, 8 months ago) by dillon
Branches: MAIN
Diff to: previous 1.2: preferred, unified
Changes since revision 1.2: +6 -6 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

    * 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

    * 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 1.2: download - view: text, markup, annotated - select for diffs
Tue Jun 17 04:28:38 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 02:54:50 2003 UTC (10 years, 10 months ago) by dillon
Branches: MAIN
import from FreeBSD RELENG_4

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