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 detac

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.

MFC after: 1 week
Reviewed by: anholt

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Add the PCI id for the Intel 7221's integrated graphics controller. It is
similar to a 915G.

Approved by: re (kensmith)
Reviewed by: anholt
MFC after: 3 weeks

Add support for G965/Q965/GM965/GME965/GME945 AGP.

This adds a function to agp.c to set the aperture resource ID if it's
not the usual AGP_APBASE. Previously, agp.c had been assuming
AGP_APBASE, wh

Add support for G965/Q965/GM965/GME965/GME945 AGP.

This adds a function to agp.c to set the aperture resource ID if it's
not the usual AGP_APBASE. Previously, agp.c had been assuming
AGP_APBASE, which resulted in incorrect agp_info, and contortions by
agp_i810.c to work around it.

This also adds functions to agp.c for default AGP_GET_APERTURE() and
AGP_SET_APERTURE(), which return the aperture resource size and disallow
aperture size changes. Moving to these for our AGP drivers will likely
result in stability improvements. This should fix 855-class aperture
size detection.

Additionally, refuse to attach agp_i810 when some RAM is above 4GB and
the GART can't reference memory that high. This should be very rare.
The correct solution would be bus_dma conversion for agp, which is
beyond the scope of this change. Other AGP drivers could likely use
this change as well.

G33/Q35/Q33 AGP support is also included, but disconnected by default
due to lack of testing.

PR: kern/109724 (855 aperture issue)
Submitted by: FUJIMOTO Kou<fujimoto@j.dendai.ac.jp>
Approved by: re (hrs)

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Add support for 945G/GM AGP chipsets.

The key problem was that the aperture size detection using the MSAC bit
doesn't work -- the bit appears to be set even when it shouldn't be. Linux
takes a diff

Add support for 945G/GM AGP chipsets.

The key problem was that the aperture size detection using the MSAC bit
doesn't work -- the bit appears to be set even when it shouldn't be. Linux
takes a different approach, testing for a bit of the GMADR (PCIR_BAR(2)) being
set. However, as I don't think that's a safe way to test aperture size, we
just allocate the resource and check its size. This also pointed out that
agp_generic_attach hadn't been allocating our aperture resource, which may
have caused problems in some cases.

Also corrected is a minor copy-and-pasteo in an error case.

PR: kern/103079
Submitted by: mnag
Tested on: i945GM, i915GM
MFC after: 2 weeks

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Fix breakage of CHIP_I855 in the last revision.

Submitted by: Ted Faber <faber@ISI.EDU>

Replace the three copies of the list of pci ids with a single centralized list.
Add the i945 PCI IDs commented out -- I think it should just work, but it hasn't
been tested yet.

Add support for allocating one larger than page-sized contiguous block of memory
with a physical address. This is used for hardware ARGB cursor support on newer
chipsets.

Don't add an agp child in vgapci's attach routine if the PCIY_AGP
capability is present as not all devices supported by the agp_i810 driver
(such as i915) have the AGP capability. Instead, add an id

Don't add an agp child in vgapci's attach routine if the PCIY_AGP
capability is present as not all devices supported by the agp_i810 driver
(such as i915) have the AGP capability. Instead, add an identify routine
to the agp_i810 driver that uses the PCI ID to determine if it should
create an agp child device.

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- Bump FreeBSD version for the hostb(4) and vgapci(4) drivers as well as
the addition of pci_find_extcap().
- Change the drm drivers to attach to vgapci. This is #ifdef'd so the
code can be shar

- Bump FreeBSD version for the hostb(4) and vgapci(4) drivers as well as
the addition of pci_find_extcap().
- Change the drm drivers to attach to vgapci. This is #ifdef'd so the
code can be shared across branches.
- Use pci_find_extcap() to look for AGP and PCIE capabilities in drm.
- GC all the drmsub stuff for i810/i830/i915. The agp and drm devices are
now both children of vgapci.

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Add support for i915 GMCH AGP. This diff is a combination of work by myself
and some fixes from Motomichi Matsuzaki. Testing involved many people, but the
final, successful testing was from rwatson

Add support for i915 GMCH AGP. This diff is a combination of work by myself
and some fixes from Motomichi Matsuzaki. Testing involved many people, but the
final, successful testing was from rwatson who endured several rounds of "it
crashes at XYZ stage" "oh, please correct this typo and try again." The Linux
driver, and to a small extent the limited specs, were both used as a reference
for how to program the chipset.

PR: kern/80396
Submitted by: Martin Mersberger

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Return BUS_PROBE_DEFAULT instead of 0.

Use VM_ALLOC_NOBUSY to eliminate an unneeded vm_page_wakeup() call and the
synchronization that one entails.

Add missing <sys/module.h> includes

Get rid of a lockmgr consumer by making agp(4) use a standard mutex,
since it's always acquiring the lock exclusively. This was tested
with X on an SMP box, with and without WITNESS.

Push down the responsibility for zeroing a physical page from the
caller to vm_page_grab(). Although this gives VM_ALLOC_ZERO a
different meaning for vm_page_grab() than for vm_page_alloc(), I feel

Push down the responsibility for zeroing a physical page from the
caller to vm_page_grab(). Although this gives VM_ALLOC_ZERO a
different meaning for vm_page_grab() than for vm_page_alloc(), I feel
such change is necessary to accomplish other goals. Specifically, I
want to make the PG_ZERO flag immutable between the time it is
allocated by vm_page_alloc() and freed by vm_page_free() or
vm_page_free_zero() to avoid locking overheads. Once we gave up on
the ability to automatically recognize a zeroed page upon entry to
vm_page_free(), the ability to mutate the PG_ZERO flag became useless.
Instead, I would like to say that "Once a page becomes valid, its
PG_ZERO flag must be ignored."

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Add the ability to disable agp devices at the loader prompt. Usage is
hint.agp.0.disabled="1"

Submitted by: jhb

Convert callers to the new bus_alloc_resource_any(9) API.

Submitted by: Mark Santcroos <marks@ripe.net>
Reviewed by: imp, dfr, bde

Use a switch statement on the devid instead of if-else for determing which
code to use to see if the onboard video has been disabled or not.

Submitted by: Keith Whitwell <keith@tungstengraphics.com>

Make the i810 AGP device create a "drmsub" child device. This will be attached
to by the DRM for i8xx devices.

Submitted by: Keith Whitwell <keith@tungstengraphics.com>

Prefer new location of pci include files (which have only been in the
tree for two or more years now), except in a few places where there's
code to be compatible with older versions of FreeBSD.

Add vm object locking.

Use __FBSDID().

- Express hard dependencies on bus (pci, isa, pccard) and
network layer (ether).
- Don't abuse module names to facilitate ifconfig module loading;
such abuse isn't really needed. (And if we do n

- Express hard dependencies on bus (pci, isa, pccard) and
network layer (ether).
- Don't abuse module names to facilitate ifconfig module loading;
such abuse isn't really needed. (And if we do need type information
associated with a module then we should make it explicit and not
use hacks.)

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Back out M_* changes, per decision of the TRB.

Approved by: trb

Remove an extra agp_flush_cache(). The i810 case that needs it already has it.