Commit Graph

207 Commits

Author SHA1 Message Date
Konstantin Belousov
a537a017e8 Initial attachment of the agp(4) to Haswell IGP. There is no handling
of cacheablility control bits in GTT PTEs yet.

Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
2014-11-11 12:56:30 +00:00
Konstantin Belousov
d6fe56e5d7 Based on some BIOS configuration (GGC register in host bridge, bit 1),
IGP may declare subclass as either VGA-compatible, or non-VGA.  The
difference is that in the later case, IGP does not claim VGA cycles.
Other than that, the device functions normally, and agp_i810 should
attach to it.

Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
2014-11-11 12:52:45 +00:00
Konstantin Belousov
a41f4046f5 On 965 and higher, map GTT as write-combining.
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
2014-11-11 12:37:13 +00:00
Konstantin Belousov
53dc09a8e6 Revert agp_intel.c part of the r274040 for now. There is a confusion
on my part about north bridge/GPU pci ids and use of aperture.

Leave the agp_intel.c out of static compilation on amd64, it makes the
things consistent with agp.ko.

Pointed out by:	tijl
Sponsored by:	The FreeBSD Foundation
MFC after:	13 days
2014-11-04 09:56:58 +00:00
Konstantin Belousov
a0cc5254d9 agp_intel.c provides support for AGP on Intel chipsets from 440/BX to
875.  This intersects with the agp_i810.c, which supports all Intels
from i810 to Core i5/7.  Both agp_intel.c and agp_i810.c are compiled
into kernel when device agp is specified in config, and agp_i810
attach seems to be selected by chance due to linking order.

Strip support for 810 and later from agp_intel.c.  Since 440-class
chipsets do not support any long-mode capable CPUs, remove agp_intel.c
from amd64 kernel file list.  Note that agp_intel.c is not compiled
into agp.ko on amd64 already.

Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
2014-11-03 11:49:35 +00:00
Tijl Coosemans
0de6ac2e3c - agp_generic_unbind_memory: flush AGP TLB before unwiring pages
- agp_bind_pages: assert that pages have been wired down

MFC after:	1 month
2014-11-02 11:47:40 +00:00
Tijl Coosemans
a8ac51bbb6 In agp_amd_bind_page don't flush the AGP TLB. It's done by the calling
function.
2014-11-02 11:28:15 +00:00
Tijl Coosemans
4e612cddb9 In agp(4) avoid the need to flush all cpu caches with wbinvd between
updating the GTT and flushing the AGP TLB by storing the GTT in
write-combining memory.

On x86 flushing the AGP TLB is done by an I/O operation or a store to a
MMIO register in uncacheable memory.  Both cases imply that WC buffers are
flushed so no memory barriers are needed.

On powerpc there is no WC memory type.  It maps to uncacheable memory and
two stores to uncacheable memory, such as to the GTT and then to an MMIO
register, are strongly ordered, so no memory barriers are needed either.

MFC after:	1 month
2014-11-02 11:26:37 +00:00
Tijl Coosemans
cf99ea5d13 Avoid possible overflow in agp_generic_alloc_memory.
MFC after:	1 week
2014-10-30 14:36:27 +00:00
Tijl Coosemans
903fb143cf Add two new functions to the AGP driver KPI to bind/unbind arbitrary sets
of pages into the GTT.

Reviewed by:	kib
MFC after:	1 month
2014-10-30 11:27:03 +00:00
Attilio Rao
3ae10f7477 - Modify vm_page_unwire() and vm_page_enqueue() to directly accept
the queue where to enqueue pages that are going to be unwired.
- Add stronger checks to the enqueue/dequeue for the pagequeues when
  adding and removing pages to them.

Of course, for unmanaged pages the queue parameter of vm_page_unwire() will
be ignored, just as the active parameter today.
This makes adding new pagequeues quicker.

This change effectively modifies the KPI.  __FreeBSD_version will be,
however, bumped just when the full cache of free pages will be
evicted.

Sponsored by:	EMC / Isilon storage division
Reviewed by:	alc
Tested by:	pho
2014-06-16 18:15:27 +00:00
Eitan Adler
7a22215c53 Fix undefined behavior: (1 << 31) is not defined as 1 is an int and this
shifts into the sign bit.  Instead use (1U << 31) which gets the
expected result.

This fix is not ideal as it assumes a 32 bit int, but does fix the issue
for most cases.

A similar change was made in OpenBSD.

Discussed with:	-arch, rdivacky
Reviewed by:	cperciva
2013-11-30 22:17:27 +00:00
Konstantin Belousov
5944de8ecd Remove the deprecated VM_ALLOC_RETRY flag for the vm_page_grab(9).
The flag was mandatory since r209792, where vm_page_grab(9) was
changed to only support the alloc retry semantic.

Suggested and reviewed by:	alc
Sponsored by:	The FreeBSD Foundation
2013-08-22 07:39:53 +00:00
Attilio Rao
c7aebda8a1 The soft and hard busy mechanism rely on the vm object lock to work.
Unify the 2 concept into a real, minimal, sxlock where the shared
acquisition represent the soft busy and the exclusive acquisition
represent the hard busy.
The old VPO_WANTED mechanism becames the hard-path for this new lock
and it becomes per-page rather than per-object.
The vm_object lock becames an interlock for this functionality:
it can be held in both read or write mode.
However, if the vm_object lock is held in read mode while acquiring
or releasing the busy state, the thread owner cannot make any
assumption on the busy state unless it is also busying it.

Also:
- Add a new flag to directly shared busy pages while vm_page_alloc
  and vm_page_grab are being executed.  This will be very helpful
  once these functions happen under a read object lock.
- Move the swapping sleep into its own per-object flag

The KPI is heavilly changed this is why the version is bumped.
It is very likely that some VM ports users will need to change
their own code.

Sponsored by:	EMC / Isilon storage division
Discussed with:	alc
Reviewed by:	jeff, kib
Tested by:	gavin, bapt (older version)
Tested by:	pho, scottl
2013-08-09 11:11:11 +00:00
Attilio Rao
89f6b8632c Switch the vm_object mutex to be a rwlock. This will enable in the
future further optimizations where the vm_object lock will be held
in read mode most of the time the page cache resident pool of pages
are accessed for reading purposes.

The change is mostly mechanical but few notes are reported:
* The KPI changes as follow:
  - VM_OBJECT_LOCK() -> VM_OBJECT_WLOCK()
  - VM_OBJECT_TRYLOCK() -> VM_OBJECT_TRYWLOCK()
  - VM_OBJECT_UNLOCK() -> VM_OBJECT_WUNLOCK()
  - VM_OBJECT_LOCK_ASSERT(MA_OWNED) -> VM_OBJECT_ASSERT_WLOCKED()
    (in order to avoid visibility of implementation details)
  - The read-mode operations are added:
    VM_OBJECT_RLOCK(), VM_OBJECT_TRYRLOCK(), VM_OBJECT_RUNLOCK(),
    VM_OBJECT_ASSERT_RLOCKED(), VM_OBJECT_ASSERT_LOCKED()
* The vm/vm_pager.h namespace pollution avoidance (forcing requiring
  sys/mutex.h in consumers directly to cater its inlining functions
  using VM_OBJECT_LOCK()) imposes that all the vm/vm_pager.h
  consumers now must include also sys/rwlock.h.
* zfs requires a quite convoluted fix to include FreeBSD rwlocks into
  the compat layer because the name clash between FreeBSD and solaris
  versions must be avoided.
  At this purpose zfs redefines the vm_object locking functions
  directly, isolating the FreeBSD components in specific compat stubs.

The KPI results heavilly broken by this commit.  Thirdy part ports must
be updated accordingly (I can think off-hand of VirtualBox, for example).

Sponsored by:	EMC / Isilon storage division
Reviewed by:	jeff
Reviewed by:	pjd (ZFS specific review)
Discussed with:	alc
Tested by:	pho
2013-03-09 02:32:23 +00:00
Konstantin Belousov
5f451cd59b Fix reversed condition in the logic to wait for the chipset buffers
flush wait on the Gen2 chipsets.  Confirmed by the inspection of the
Linux agp code.

Submitted by:	Taku YAMAMOTO <taku@tackymt.homeip.net>
MFC after:	2 weeks
2013-01-27 09:31:11 +00:00
Antoine Brodin
dfa4d7fdb9 Remove unneeded semicolons.
Reviewed by:	md5 of the object files
2013-01-01 18:16:49 +00:00
Baptiste Daroussin
af62061042 Add pci id for the xeon hd4000 (IvyBridge server GT2)
Submitted by:	François Tigeot <ftigeot@wolfpond.org>
Obtained from:	dragonfly
MFC after:	3 days
2012-12-11 09:38:12 +00:00
Eitan Adler
9e93aa2336 Remove unneeded header from agp: opt_bus.h
Tested with "make universe"

Approved by:	cperciva
MFC after:	1 week
2012-11-15 18:49:17 +00:00
Eitan Adler
a8de37b024 This isn't functionally identical. In some cases a hint to disable
unit 0 would in fact disable all units.

This reverts r241856

Approved by: cperciva (implicit)
2012-10-22 13:06:09 +00:00
Eitan Adler
76b7512247 Now that device disabling is generic, remove extraneous code from the
device drivers that used to provide this feature.

Reviewed by:	des
Approved by:	cperciva
MFC after:	1 week
2012-10-22 03:41:14 +00:00
Konstantin Belousov
1c771f9222 After the PHYS_TO_VM_PAGE() function was de-inlined, the main reason
to pull vm_param.h was removed.  Other big dependency of vm_page.h on
vm_param.h are PA_LOCK* definitions, which are only needed for
in-kernel code, because modules use KBI-safe functions to lock the
pages.

Stop including vm_param.h into vm_page.h. Include vm_param.h
explicitely for the kernel code which needs it.

Suggested and reviewed by:	alc
MFC after:    2 weeks
2012-08-05 14:11:42 +00:00
Marcel Moolenaar
cbf1d2e3f6 Revert revision 238172 of agp_i810.c. Correctness is considered more
important than avoiding confusion.

Feedback from: kib, jhb
2012-07-09 16:23:59 +00:00
Marcel Moolenaar
e11379e9f8 agp.c:
Don't use Maxmem when the amount of memory is meant. Use realmem instead.
Maxmem is not only a MD variable, it represents the highest physical memory
address in use. On systems where memory is sparsely layed-out the highest
memory address and the amount of memory are not interchangeable. Scaling the
AGP aperture based on the actual amount of memory (= realmem) rather than
the available memory (= physmem) makes sure there's consistent behaviour
across architectures.

agp_i810.c:
While arguably the use of Maxmem can be considered correct, replace its use
with realmem anyway. agp_i810.c is specific to amd64, i386 & pc98, which
have a dense physical memory layout. Avoiding Maxmem here is done with an
eye on copy-n-paste behaviour in general and to avoid confusion caused by
using realmem in agp.c and Maxmem in agp_i810.c.

In both cases, remove the inclusion of md_var.h
2012-07-06 15:57:03 +00:00
Konstantin Belousov
e1f4f1f860 Correct device id for GPU on some server SandyBridge model.
Submitted and tested by:	Thomas Zander <thomas.e.zander googlemail com>
MFC after:	3 days
2012-06-23 15:36:32 +00:00
Konstantin Belousov
28d86329af A rewrite of the i810 bits of the agp(4) driver. New driver supports
operations required by GEMified i915.ko. It also attaches to SandyBridge
and IvyBridge CPU northbridges now.

Sponsored by:	The FreeBSD Foundation
MFC after:	1 month
2012-05-22 10:59:26 +00:00
John Baldwin
3b0a4aef96 Do a sweep of the tree replacing calls to pci_find_extcap() with calls to
pci_find_cap() instead.
2011-03-23 13:10:15 +00:00
Nathan Whitehorn
50fd2a5b9c Add a driver for the Apple Uninorth AGP host bridge found in all PowerPC
Macintoshes with an AGP bus.
2010-10-31 18:27:05 +00:00
Konstantin Belousov
83d5d2963e Do not mention VM_ALLOC_RETRY in comment, and normalize the terminology
(blocking -> sleeping).

Reviewed by:	alc
MFC after:	3 days
2010-07-08 08:39:02 +00:00
Brian Somers
5d6d222816 Add a missing linefeed
PR:		147337
Submitted by:	cyberleo at cyberleo dot net
MFC after:	1 week
2010-06-19 08:42:29 +00:00
Alan Cox
e3ef0d2fcf Push down the acquisition of the page queues lock into vm_page_unwire().
Update the comment describing which lock should be held on entry to
vm_page_wire().

Reviewed by:	kib
2010-05-05 03:45:46 +00:00
Alan Cox
5fdd0a335f Acquire the page lock around vm_page_unwire(). For consistency, extend the
scope of the object lock in agp_i810.c.  (In this specific case, the scope
of the object lock shouldn't matter, but I don't want to create a bad
example that might be copied to a case where it did matter.)

Reviewed by:	kib
2010-05-03 16:55:50 +00:00
Robert Noland
c7bbe8bdaf Add support of Intel Pineview chips, aka IGD.
MFC after:	3 days
2010-03-12 21:34:23 +00:00
Robert Noland
9ccf1d6a0b Add pci ids for Intel Ironlake chipsets.
These behave just like g45 for agp.

Tested by:	Torfinn Ingolfsen

MFC after:	3 days
2010-03-12 19:43:39 +00:00
Martin Blapp
c2ede4b379 Remove extraneous semicolons, no functional changes.
Submitted by:	Marc Balmer <marc@msys.ch>
MFC after:	1 week
2010-01-07 21:01:37 +00:00
Robert Noland
cfd7bacef2 Update d_mmap() to accept vm_ooffset_t and vm_memattr_t.
This replaces d_mmap() with the d_mmap2() implementation and also
changes the type of offset to vm_ooffset_t.

Purge d_mmap2().

All driver modules will need to be rebuilt since D_VERSION is also
bumped.

Reviewed by:	jhb@
MFC after:	Not in this lifetime...
2009-12-29 21:51:28 +00:00
Robert Noland
66ab1230f1 Fix a handful of issues with via agp support.
* Read the pci capability register to identify AGP 3 support
  * Add missing smaller aperture sizes for AGP3 chips.
  * Fix the aperture size calculation on AGP2 chips.
    All sizes between 32M and 256M reported as 256M.
  * Add \n to error string.

This all seems to get the CLE266 EPIA-M board agp working properly, now
back to work on drm.

MFC after:	2 weeks
2009-12-21 03:28:05 +00:00
Robert Noland
2d52bcc46b Add pci id's for Intel G41 chipset
Submitted by:	Artyom Mirgorodsky <man@email.com.ua>
MFC after:	3 days
2009-10-11 01:51:35 +00:00
Nick Hibma
c1a293abfc John Baldwin suggested that 'stolen memory' only happens in the case of
i810 and therefore is useful info there. Aperture size and stolen memory
are now printed on one line.

Submitted by:	jhb
2009-09-14 13:16:16 +00:00
Nick Hibma
3e3a2c6062 Move the printing of aperture size and stolen memory behind bootverbose.
None of the other AGP drivers actually displays this information at all,

MFC after:	1 week
2009-09-10 19:24:46 +00:00
Andriy Gapon
446188d1e6 strict kobj signatures: fixes in agp driver
offset parameter has vm_offset_t type in calling code and in kobj method

Reviewed by:	imp, rnoland, lulf, current@
Approved by:	jhb (mentor)
2009-06-11 17:06:07 +00:00
Ed Schouten
b7d9e67c45 Use si_drv1 instead of dev2unit() inside agp(4).
Reviewed by:	rnoland
2009-04-14 13:11:34 +00:00
Robert Noland
45d0290a5d vm_offset_t is unsigned and therefore can not be negative.
Avoid unnessecary compares.

Found with:	Coverity Prevent(tm)
CID:		2362,4215,4214,4209,4208,2363,4211,4210,4213,4212

MFC after:	3 days
2009-03-20 18:30:20 +00:00
Warner Losh
cd6d5177a7 Fix prototypes to be consistent. 2009-03-09 13:27:33 +00:00
Wojciech A. Koszek
c353491ad3 Fix AGP debugging code:
- correct format strings
- fill opt_agp.h if AGP_DEBUG is defined
- bring AGP_DEBUG to LINT by mentioning it in NOTES

This should hopefully fix a warning that was...

Found by:	Coverity Prevent(tm)
CID:		3676
Tested on:	amd64, i386
2009-02-06 20:57:10 +00:00
Jung-uk Kim
129dec4245 - Add few VIA bridges to agp_via.c and connect it to amd64 build
as they support Intel Core/Core 2 and VIA Nano processors.
- Align "optional agp" in conf/files.* for consistency while I am here.
2009-01-23 17:48:18 +00:00
Jung-uk Kim
7dcbc463ef Add support for AMD64 Family 10h processors.
PR:		kern/128331
MFC after:	3 days
2009-01-12 16:07:03 +00:00
Robert Noland
fc25498ad9 Fix up handling of Intel G4X chips some more.
Note that you need at least xf86-video-intel 2.4.3 for this to work.
The G4X doesn't put the GATT into the same area of stolen memory
as all the other chips and older versions of the driver didn't
handle that properly.

Tested by:	ganbold
Approved by:	kib
MFC after:	2 weeks
2008-12-23 16:16:30 +00:00
Konstantin Belousov
fc72031c5d Clear busy state on the pages which are after the one that failed the bind
attempt.

Reported and tested by:	ganbold
Reviewed by:	rnoland
MFC after:	2 weeks
2008-12-23 16:04:33 +00:00
Robert Noland
213ab42e6b Deal with 0 length args...
Approved by:	kib
2008-12-21 22:30:37 +00:00