DragonFly BSD

CVS log for src/sys/dev/agp/agp.c

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Revision 1.30: download - view: text, markup, annotated - select for diffs
Mon Jan 7 01:34:58 2008 UTC (6 years, 9 months ago) by corecode
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 1.29: preferred, unified
Changes since revision 1.29: +1 -1 lines
Pull up CVS idents from FreeBSD to match our current version.

Revision 1.29: download - view: text, markup, annotated - select for diffs
Mon Jan 7 01:25:29 2008 UTC (6 years, 9 months ago) by corecode
Branches: MAIN
Diff to: previous 1.28: preferred, unified
Changes since revision 1.28: +17 -4 lines
Update from FreeBSD:

Split agp_generic_detach() up into two routines: agp_free_cdev() destroys
/dev/agpgart and agp_free_res() frees resources like the BAR for the
aperture.  Splitting this up lets chipset-specific detach routines
manipulate the aperture during their detach routines without panicing.

Obtained-from:  FreeBSD

Revision 1.28: download - view: text, markup, annotated - select for diffs
Sat Jan 5 14:02:37 2008 UTC (6 years, 9 months ago) by swildner
Branches: MAIN
Diff to: previous 1.27: preferred, unified
Changes since revision 1.27: +1 -2 lines
For kmalloc(), MALLOC() and contigmalloc(), use M_ZERO instead of
explicitly bzero()ing.

Reviewed-by: sephe

Revision 1.27: download - view: text, markup, annotated - select for diffs
Wed Sep 12 08:31:43 2007 UTC (7 years, 1 month ago) by hasso
Branches: MAIN
Diff to: previous 1.26: preferred, unified
Changes since revision 1.26: +79 -17 lines
Update the agp(4) code to the latest one from FreeBSD HEAD. This brings in
a lot of newer hardware support.

Obtained-from: FreeBSD

Revision 1.26: download - view: text, markup, annotated - select for diffs
Fri Dec 22 23:26:14 2006 UTC (7 years, 10 months ago) by swildner
Branches: MAIN
CVS tags: DragonFly_RELEASE_1_8_Slip, DragonFly_RELEASE_1_8, DragonFly_RELEASE_1_10_Slip, DragonFly_RELEASE_1_10
Diff to: previous 1.25: preferred, unified
Changes since revision 1.25: +2 -2 lines
Rename printf -> kprintf in sys/ and add some defines where necessary
(files which are used in userland, too).

Revision 1.25: download - view: text, markup, annotated - select for diffs
Wed Oct 25 20:55:52 2006 UTC (8 years ago) by dillon
Branches: MAIN
Diff to: previous 1.24: preferred, unified
Changes since revision 1.24: +1 -3 lines
Do a major clean-up of the BUSDMA architecture.  A large number of
essentially machine-independant drivers use the structures and definitions
in machine-dependant directories that are really machine-independant in
nature.

Split <machine/bus_dma.h> into machine-depdendant and machine-independant parts
and make the primary access run through <sys/bus_dma.h>.

Remove <machine/bus.h>, <machine/bus_memio.h> and <machine/bus_pio.h>.  The
optimizations related to bus_memio.h and bus_pio.h made a huge mess,
introduced machine-specific knowledge into essentially machine-independant
drivers, and required specific #include file orderings to do their job.
They may be reintroduced in some other form later on.

Move <machine/resource.h> to <sys/bus_resource.h>.  The contents of the file
is machine-independant or can be made a superset across many platforms.

Make <sys/bus.h> include <sys/bus_dma.h> and <sys/bus_resource.h> and
include <sys/bus.h> where necessary. Remove all #include's of
<machine/resource.h> and <machine/bus.h>.  That is, make the BUSDMA
infrastructure integral to I/O-mapped and memory-mapped accesses to devices
and remove a large chunk of machine-specific dependancies from drivers.
bus_if.h and device_if.h are now required to be present when using <sys/bus.h>.

Revision 1.24: download - view: text, markup, annotated - select for diffs
Sun Sep 10 01:26:33 2006 UTC (8 years, 1 month ago) by dillon
Branches: MAIN
Diff to: previous 1.23: preferred, unified
Changes since revision 1.23: +4 -4 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 1.23: download - view: text, markup, annotated - select for diffs
Tue Sep 5 00:55:36 2006 UTC (8 years, 1 month ago) by dillon
Branches: MAIN
Diff to: previous 1.22: preferred, unified
Changes since revision 1.22: +7 -7 lines
Rename malloc->kmalloc, free->kfree, and realloc->krealloc.  Pass 1

Revision 1.22: download - view: text, markup, annotated - select for diffs
Thu Aug 3 16:40:46 2006 UTC (8 years, 2 months ago) by swildner
Branches: MAIN
Diff to: previous 1.21: preferred, unified
Changes since revision 1.21: +1 -1 lines
Remove all occurences of double semicolons at the end of a line by
single ones.

Submitted-by: Bill Marquette <bill.marquette@gmail.com>

Revision 1.21: download - view: text, markup, annotated - select for diffs
Fri Jul 28 02:17:35 2006 UTC (8 years, 3 months ago) by dillon
Branches: MAIN
Diff to: previous 1.20: preferred, unified
Changes since revision 1.20: +30 -35 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 1.20: download - view: text, markup, annotated - select for diffs
Fri May 5 20:15:01 2006 UTC (8 years, 5 months ago) by dillon
Branches: MAIN
CVS tags: DragonFly_RELEASE_1_6_Slip, DragonFly_RELEASE_1_6
Diff to: previous 1.19: preferred, unified
Changes since revision 1.19: +8 -8 lines
Remove the thread pointer argument to lockmgr().  All lockmgr() ops use the
current thread.

Move the lockmgr code in BUF_KERNPROC to lockmgr_kernproc().  This code
allows the lock owner to be set to a special value so any thread can unlock
the lock and is required for B_ASYNC I/O so biodone() can release the lock.

Revision 1.19: download - view: text, markup, annotated - select for diffs
Sun Apr 23 03:07:59 2006 UTC (8 years, 6 months ago) by dillon
Branches: MAIN
Diff to: previous 1.18: preferred, unified
Changes since revision 1.18: +8 -8 lines
Remove the now unused interlock argument to the lockmgr() procedure.
This argument has been abused over the years by kernel programmers
attempting to optimize certain locking and data modification sequences,
resulting in a virtually unreadable code in some cases.  The interlock
also made porting between BSDs difficult as each BSD implemented their
interlock differently.  DragonFly has slowly removed use of the interlock
argument and we can now finally be rid of it entirely.

Revision 1.18: download - view: text, markup, annotated - select for diffs
Sat Apr 22 23:41:43 2006 UTC (8 years, 6 months ago) by dillon
Branches: MAIN
Diff to: previous 1.17: preferred, unified
Changes since revision 1.17: +9 -6 lines
Get rid of LK_PCATCH in the agp lockmgr() calls.  AGP ignores the return
value and a caught event would only result in a panic.

Get rid of LK_DRAIN in the device detach code.  The device had better not
be in operation during a detach!

Add missing lockmgr LK_RELEASE calls in a number of early-return cases.

Revision 1.17: download - view: text, markup, annotated - select for diffs
Thu Mar 2 19:07:56 2006 UTC (8 years, 7 months ago) by dillon
Branches: MAIN
Diff to: previous 1.16: preferred, unified
Changes since revision 1.16: +7 -7 lines
Pass LK_PCATCH instead of trying to store tsleep flags in the lock
structure, so multiple entities competing for the same lock do not
use unexpected flags when sleeping.

Only NFS really uses PCATCH with lockmgr locks.

Revision 1.16: download - view: text, markup, annotated - select for diffs
Sun Dec 11 01:54:07 2005 UTC (8 years, 10 months ago) by swildner
Branches: MAIN
CVS tags: DragonFly_RELEASE_1_4_Slip, DragonFly_RELEASE_1_4
Diff to: previous 1.15: preferred, unified
Changes since revision 1.15: +2 -2 lines
* Ansify function definitions.

* Minor style cleanup.

Submitted-by: Alexey Slynko <slynko@tronet.ru>

Revision 1.15: download - view: text, markup, annotated - select for diffs
Thu May 5 22:57:44 2005 UTC (9 years, 5 months ago) by swildner
Branches: MAIN
Diff to: previous 1.14: preferred, unified
Changes since revision 1.14: +0 -4 lines
Remove DEC Alpha support.

Revision 1.14: download - view: text, markup, annotated - select for diffs
Thu Jul 29 00:48:41 2004 UTC (10 years, 2 months ago) by dillon
Branches: MAIN
CVS tags: DragonFly_Stable, DragonFly_Snap29Sep2004, DragonFly_Snap13Sep2004, DragonFly_RELEASE_1_2_Slip, DragonFly_RELEASE_1_2
Diff to: previous 1.13: preferred, unified
Changes since revision 1.13: +4 -2 lines
Output a more descriptive error message when AGP can't bind memory.

Revision 1.13: download - view: text, markup, annotated - select for diffs
Wed May 19 22:52:40 2004 UTC (10 years, 5 months ago) by dillon
Branches: MAIN
CVS tags: DragonFly_1_0_REL, DragonFly_1_0_RC1, DragonFly_1_0A_REL
Diff to: previous 1.12: preferred, unified
Changes since revision 1.12: +4 -7 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 1.12: download - view: text, markup, annotated - select for diffs
Thu May 13 23:49:14 2004 UTC (10 years, 5 months ago) by dillon
Branches: MAIN
Diff to: previous 1.11: preferred, unified
Changes since revision 1.11: +1 -1 lines
device switch 1/many: Remove d_autoq, add d_clone (where d_autoq was).

d_autoq was used to allow the device port dispatch to mix old-style synchronous
calls with new style messaging calls within a particular device.  It was never
used for that purpose.

d_clone will be more fully implemented as work continues.  We are going to
install d_port in the dev_t (struct specinfo) structure itself and d_clone
will be needed to allow devices to 'revector' the port on a minor-number
by minor-number basis, in particular allowing minor numbers to be directly
dispatched to distinct threads.  This is something we will be needing later
on.

Revision 1.11: download - view: text, markup, annotated - select for diffs
Wed Mar 24 20:42:12 2004 UTC (10 years, 7 months ago) by dillon
Branches: MAIN
Diff to: previous 1.10: preferred, unified
Changes since revision 1.10: +4 -7 lines
Fix malloc semantics (M_NOWAIT->M_INTWAIT/M_WAITOK).

Revision 1.10: download - view: text, markup, annotated - select for diffs
Mon Mar 1 06:33:13 2004 UTC (10 years, 7 months ago) by dillon
Branches: MAIN
Diff to: previous 1.9: preferred, unified
Changes since revision 1.9: +6 -6 lines
Newtoken commit.  Change the token implementation as follows:  (1) Obtaining
a token no longer enters a critical section.  (2) tokens can be held through
schedular switches and blocking conditions and are effectively released and
reacquired on resume.  Thus tokens serialize access only while the thread
is actually running.  Serialization is not broken by preemptive interrupts.
That is, interrupt threads which preempt do no release the preempted thread's
tokens.  (3) Unlike spl's, tokens will interlock w/ interrupt threads on
the same or on a different cpu.

The vnode interlock code has been rewritten and the API has changed.  The
mountlist vnode scanning code has been consolidated and all known races have
been fixed.  The vnode interlock is now a pool token.

The code that frees unreferenced vnodes whos last VM page has been freed has
been moved out of the low level vm_page_free() code and moved to the
periodic filesystem sycer code in vfs_msycn().

The SMP startup code and the IPI code has been cleaned up considerably.
Certain early token interactions on AP cpus have been moved to the BSP.

The LWKT rwlock API has been cleaned up and turned on.

Major testing by: David Rhodus

Revision 1.9: download - view: text, markup, annotated - select for diffs
Tue Jan 20 05:04:03 2004 UTC (10 years, 9 months ago) by dillon
Branches: MAIN
Diff to: previous 1.8: preferred, unified
Changes since revision 1.8: +1 -1 lines
Retool the M_* flags to malloc() and the VM_ALLOC_* flags to
vm_page_alloc(), and vm_page_grab() and friends.

The M_* flags now have more flexibility, with the intent that we will start
using some of it to deal with NULL pointer return problems in the codebase
(CAM is especially bad at dealing with unexpected return values).  In
particular, add M_USE_INTERRUPT_RESERVE and M_FAILSAFE, and redefine
M_NOWAIT as a combination of M_ flags instead of its own flag.

The VM_ALLOC_* macros are now flags (0x01, 0x01, 0x04) rather then states
(1, 2, 3), which allows us to create combinations that the old interface
could not handle.

Revision 1.8: download - view: text, markup, annotated - select for diffs
Tue Dec 9 19:40:56 2003 UTC (10 years, 10 months ago) by dillon
Branches: MAIN
Diff to: previous 1.7: preferred, unified
Changes since revision 1.7: +113 -13 lines
This patch adds a bunch of stuff from FreeBSD5.  It consistantly makes
vendor specific drivers depend on agp, consistantly checks the gart size
!= 0, changes agp_generic_enable to the FreeBSD5 function, initializing
the device as v2 or v3 accordingly, syncs up agpio.h, and adds a couple
PCI Ids from FreeBSD5.

Submitted-by: Craig Dooley <cd5697@albany.edu>

Revision 1.7: download - view: text, markup, annotated - select for diffs
Thu Aug 7 21:16:48 2003 UTC (11 years, 2 months ago) by dillon
Branches: MAIN
Diff to: previous 1.6: preferred, unified
Changes since revision 1.6: +5 -5 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 1.6: download - view: text, markup, annotated - select for diffs
Mon Jul 21 05:50:46 2003 UTC (11 years, 3 months ago) by dillon
Branches: MAIN
Diff to: previous 1.5: preferred, unified
Changes since revision 1.5: +7 -5 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 1.5: download - view: text, markup, annotated - select for diffs
Sat Jul 19 21:14:49 2003 UTC (11 years, 3 months ago) by dillon
Branches: MAIN
Diff to: previous 1.4: preferred, unified
Changes since revision 1.4: +2 -2 lines
Remove the priority part of the priority|flags argument to tsleep().  Only
flags are passed now.  The priority was a user scheduler thingy that is not
used by the LWKT subsystem.  For process statistics assume sleeps without
P_SINTR set to be disk-waits, and sleeps with it set to be normal sleeps.

This commit should not contain any operational changes.

Revision 1.4: download - view: text, markup, annotated - select for diffs
Wed Jun 25 03:56:09 2003 UTC (11 years, 4 months ago) by dillon
Branches: MAIN
CVS tags: PRE_MP
Diff to: previous 1.3: preferred, unified
Changes since revision 1.3: +7 -7 lines
proc->thread stage 4: rework the VFS and DEVICE subsystems to take thread
pointers instead of process pointers as arguments, similar to what FreeBSD-5
did.  Note however that ultimately both APIs are going to be message-passing
which means the current thread context will not be useable for creds and
descriptor access.

Revision 1.3: download - view: text, markup, annotated - select for diffs
Mon Jun 23 17:55:49 2003 UTC (11 years, 4 months ago) by dillon
Branches: MAIN
Diff to: previous 1.2: preferred, unified
Changes since revision 1.2: +4 -4 lines
proc->thread stage 2: MAJOR revamping of system calls, ucred, jail API,
and some work on the low level device interface (proc arg -> thread arg).
As -current did, I have removed p_cred and incorporated its functions
into p_ucred.  p_prison has also been moved into p_ucred and adjusted
accordingly.  The jail interface tests now uses ucreds rather then processes.

The syscall(p,uap) interface has been changed to just (uap).  This is inclusive
of the emulation code.  It makes little sense to pass a proc pointer around
which confuses the MP readability of the code, because most system call code
will only work with the current process anyway.  Note that eventually
*ALL* syscall emulation code will be moved to a kernel-protected userland
layer because it really makes no sense whatsoever to implement these
emulations in the kernel.

suser() now takes no arguments and only operates with the current process.
The process argument has been removed from suser_xxx() so it now just takes
a ucred and flags.

The sysctl interface was adjusted somewhat.

Revision 1.2: download - view: text, markup, annotated - select for diffs
Tue Jun 17 04:28:56 2003 UTC (11 years, 4 months ago) by dillon
Branches: MAIN
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 02:55:45 2003 UTC (11 years, 4 months ago) by dillon
Branches: MAIN
CVS tags: FREEBSD_4_FORK
import from FreeBSD RELENG_4 1.3.2.4

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