Commit Graph

40 Commits

Author SHA1 Message Date
Eric Anholt
122ee2a63b drm/i915: Quiet the message on get/setparam ioctl with an unknown value.
Getting an unknown get/setparam used to be more significant back when they
didn't change much.  However, now that we're in the git world we're using
them instead of a monotonic version number to signal feature availability,
so clients ask about unknown params on older kernels more often.

Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@linux.ie>
2009-02-08 21:38:23 +10:00
Jesse Barnes
0f973f2788 drm/i915: add fence register management to execbuf
Adds code to set up fence registers at execbuf time on pre-965 chips as
necessary.  Also fixes up a few bugs in the pre-965 tile register support
(get_order != ffs).  The number of fences available to the kernel defaults
to the hw limit minus 3 (for legacy X front/back/depth), but a new parameter
allows userspace to override that as needed.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@linux.ie>
2009-02-08 21:38:02 +10:00
Eric Anholt
ab657db12d drm/i915: Set up an MTRR covering the GTT at driver load.
We'd love to just be using PAT, but even on chips with PAT it gets disabled
sometimes due to an errata.  It would probably be better to have pat_enabled
exported and only bother with this when !pat_enabled.

Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@linux.ie>
2009-02-08 21:37:50 +10:00
Jesse Barnes
2906f02587 drm/i915: Fix cursor physical address choice to match the 2D driver.
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
2009-01-22 22:29:03 +10:00
Jesse Barnes
ed2dd4b0cc drm/i915: remove unnecessary debug output in KMS init
We don't really need to print out the FB BAR...

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-01-22 22:21:16 +10:00
Dave Airlie
71acb5eb8d drm/i915: add support for physical memory objects
This is an initial patch to do support for objects which needs physical
contiguous main ram, cursors and overlay registers on older chipsets.

These objects are bound on cursor bin, like pinning, and we copy
the data to/from the backing store object into the real one on attach/detach.

notes:
possible over the top in attach/detach operations.
no overlay support yet.

Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-01-16 18:45:06 +10:00
Dave Airlie
3a03ac1a02 drm/i915: setup sarea properly in master_priv
If we are running DRI1 userspace, we really need to set the sarea up properly.

thanks to Richard for finding/testing this.

Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-01-12 22:01:34 +10:00
Eric Anholt
241fa85b2b drm/i915: Respect the other stolen memory sizes we know of.
fd.o bug #19336.

Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@linux.ie>
2009-01-07 11:50:02 +10:00
Dave Airlie
aa59662966 drm/i915: fix modeset devname allocation + agp init return check.
devname needs to be allocated before the irq is installed, so the
irq routines get the correct name in /proc.

Also check the return value from the AGP init function, and
fixup the exit points.

Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-12-29 18:18:19 +10:00
Eric Anholt
bae7ec6573 drm/i915: Delete unused, pointless i915_driver_firstopen.
Thanks to Hannes Eder for pointing out that this code was dead according to
sparse.

Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@linux.ie>
2008-12-29 17:47:26 +10:00
Hannes Eder
b358d0a625 drm/i915: fix sparse warnings: make symbols static
Signed-off-by: Hannes Eder <hannes@hanneseder.net>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@linux.ie>
2008-12-29 17:47:26 +10:00
Eric Anholt
60fd99e368 drm/i915: Fix stolen memory detection on G45 and GM45.
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-12-29 17:47:23 +10:00
Jesse Barnes
79e539453b DRM: i915: add mode setting support
This commit adds i915 driver support for the DRM mode setting APIs.
Currently, VGA, LVDS, SDVO DVI & VGA, TV and DVO LVDS outputs are
supported.  HDMI, DisplayPort and additional SDVO output support will
follow.

Support for the mode setting code is controlled by the new 'modeset'
module option.  A new config option, CONFIG_DRM_I915_KMS controls the
default behavior, and whether a PCI ID list is built into the module for
use by user level module utilities.

Note that if mode setting is enabled, user level drivers that access
display registers directly or that don't use the kernel graphics memory
manager will likely corrupt kernel graphics memory, disrupt output
configuration (possibly leading to hangs and/or blank displays), and
prevent panic/oops messages from appearing.  So use caution when
enabling this code; be sure your user level code supports the new
interfaces.

A new SysRq key, 'g', provides emergency support for switching back to
the kernel's framebuffer console; which is useful for testing.

Co-authors: Dave Airlie <airlied@linux.ie>, Hong Liu <hong.liu@intel.com>

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-12-29 17:47:23 +10:00
Jesse Barnes
de151cf67c drm/i915: add GEM GTT mapping support
Use the new core GEM object mapping code to allow GTT mapping of GEM
objects on i915.  The fault handler will make sure a fence register is
allocated too, if the object in question is tiled.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-12-29 17:47:23 +10:00
Dave Airlie
7c1c2871a6 drm: move to kref per-master structures.
This is step one towards having multiple masters sharing a drm
device in order to get fast-user-switching to work.

It splits out the information associated with the drm master
into a separate kref counted structure, and allocates this when
a master opens the device node. It also allows the current master
to abdicate (say while VT switched), and a new master to take over
the hardware.

It moves the Intel and radeon drivers to using the sarea from
within the new master structures.

Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-12-29 17:47:22 +10:00
Dave Airlie
ac5c4e7618 drm/i915: GEM on PAE has problems - disable it for now.
On PAE systems, GEM allocates pages using shmem, and passes these
pages to be bound into AGP, however the AGP interfaces + the x86
set_memory interfaces all take unsigned long not dma_addr_t.

The initial fix for this was a mess, so we need to do this correctly
for 2.6.29.

Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-12-19 15:38:34 +10:00
Keith Packard
b60678a75d drm/i915: Disable the GM965 MSI errata workaround.
Since applying the fix suggested by the errata (disabling MSI), we've had
issues with interrupts being stuck on despite IIR being 0 on GM965 hardware.
Most reporters of the issue have confirmed that turning MSI back on fixes
things, and given the difficulties experienced in getting reliable MSI working
on Linux, it's believable that the errata was about software issues and not
actual hardware issues.

Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-12-09 15:37:24 +10:00
Keith Packard
52440211dc drm: move drm vblank initialization/cleanup to driver load/unload
drm vblank initialization keeps track of the changes in driver-supplied
frame counts across vt switch and mode setting, but only if you let it by
not tearing down the drm vblank structure.

Signed-off-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-11-25 09:49:03 +10:00
Keith Packard
0baf823a10 drm/i915: Move legacy breadcrumb out of the reserved status page area
Addresses in the hardware status page below index 0x20 are reserved for use
by the hardware. The legacy breadcrumb was sitting at index 5. Move it to
index 0x21, and make sure everyone uses the defined value instead of
hard-coded constants.

Signed-off-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Dave Airlie <airlied@linux.ie>
2008-11-11 18:03:28 +10:00
Eric Anholt
d3e74d0237 i915: Don't whine when pci_enable_msi() fails.
This probably just means the chipset doesn't support MSI, which is fine.

Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@linux.ie>
2008-11-11 17:44:04 +10:00
Keith Packard
ad42ca8f44 i915: Clean up sarea pointers on leavevt
This corresponds to the setup of the sarea pointers in DMA initialization,
though neither is exactly the point at which the sarea is set up or torn down.

Signed-off-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@linux.ie>
2008-11-11 17:43:14 +10:00
Eric Anholt
5a125c3c79 i915: Add GEM ioctl to get available aperture size.
This will let userland know when to submit its batchbuffers, before they get
too big to fit in the aperture.

Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-11-03 10:56:49 +10:00
Keith Packard
d1ed629f44 i915: Disable MSI on GM965 (errata says it doesn't work)
Current Intel errata for the GM965 says that using MSI may cause interrupts
to be delayed or lost. The only workaround offered is to not use it.

Signed-off-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-10-23 13:42:26 +10:00
Matthias Hopf
4b40893918 drm/i915: fix ioremap of a user address for non-root (CVE-2008-3831)
Olaf Kirch noticed that the i915_set_status_page() function of the i915
kernel driver calls ioremap with an address offset that is supplied by
userspace via ioctl. The function zeroes the mapped memory via memset
and tells the hardware about the address. Turns out that access to that
ioctl is not restricted to root so users could probably exploit that to
do nasty things. We haven't tried to write actual exploit code though.

It only affects the Intel G33 series and newer.

Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-10-18 07:18:05 +10:00
Dave Airlie
2bdf00b221 i915: fixup permissions on gem ioctls.
init/entervt/leavevt should be root-only master ioctls.

Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-10-18 07:10:52 +10:00
Eric Anholt
3043c60c48 drm: Clean up many sparse warnings in i915.
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-10-18 07:10:52 +10:00
Kristian Høgsberg
c99b058f13 i915: Make use of sarea_priv conditional.
We fail ioctls that depend on the sarea_priv with EINVAL.

Signed-off-by: Kristian Høgsberg <krh@redhat.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-10-18 07:10:51 +10:00
Eric Anholt
546b0974c3 i915: Use struct_mutex to protect ring in GEM mode.
In the conversion for GEM, we had stopped using the hardware lock to protect
ring usage, since it was all internal to the DRM now.  However, some paths
weren't converted to using struct_mutex to prevent multiple threads from
concurrently working on the ring, in particular between the vblank swap handler
and ioctls.

Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-10-18 07:10:51 +10:00
Kristian Høgsberg
ed4c9c4acf i915: Add chip set ID param.
Signed-off-by: Kristian Høgsberg <krh@redhat.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-10-18 07:10:12 +10:00
Eric Anholt
673a394b1e drm: Add GEM ("graphics execution manager") to i915 driver.
GEM allows the creation of persistent buffer objects accessible by the
graphics device through new ioctls for managing execution of commands on the
device.  The userland API is almost entirely driver-specific to ensure that
any driver building on this model can easily map the interface to individual
driver requirements.

GEM is used by the 2d driver for managing its internal state allocations and
will be used for pixmap storage to reduce memory consumption and enable
zero-copy GLX_EXT_texture_from_pixmap, and in the 3d driver is used to enable
GL_EXT_framebuffer_object and GL_ARB_pixel_buffer_object.

Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-10-18 07:10:12 +10:00
Jesse Barnes
0a3e67a4ca drm: Rework vblank-wait handling to allow interrupt reduction.
Previously, drivers supporting vblank interrupt waits would run the interrupt
all the time, or all the time that any 3d client was running, preventing the
CPU from sleeping for long when the system was otherwise idle.  Now, interrupts
are disabled any time that no client is waiting on a vblank event. The new
method uses vblank counters on the chipsets when the interrupts are turned
off, rather than counting interrupts, so that we can continue to present
accurate vblank numbers.

Co-author: Michel Dänzer <michel@tungstengraphics.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-10-18 07:10:11 +10:00
Matthew Garrett
8ee1c3db90 Add Intel ACPI IGD OpRegion support
This adds the support necessary for allowing ACPI backlight control to
work on some newer Intel-based graphics systems. Tested on Thinkpad T61
and HP 2510p hardware.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Dave Airlie <airlied@linux.ie>
2008-10-18 07:10:10 +10:00
Keith Packard
398c9cb20b i915: Initialize hardware status page at device load when possible.
Some chips were unstable with repeated setup/teardown of the hardware status
page.

Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-10-18 07:10:10 +10:00
Keith Packard
d3a6d4467c i915: Track progress inside of batchbuffers for determining wedgedness.
This avoids early termination for long-running commands.

Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-10-18 07:10:10 +10:00
Eric Anholt
ed4cb4142b i915: Add support for MSI and interrupt mitigation.
Previous attempts at interrupt mitigation had been foiled by i915_wait_irq's
failure to update the sarea seqno value when the status page indicated that
the seqno had already been passed.  MSI support has been seen to cut CPU
costs by up to 40% in some workloads by avoiding other expensive interrupt
handlers for frequent graphics interrupts.

Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-10-18 07:10:10 +10:00
Jesse Barnes
585fb11134 i915: Use more consistent names for regs, and store them in a separate file.
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-10-18 07:10:10 +10:00
Keith Packard
962d4fd727 i915: Ignore X server provided mmio address
It is already correctly detected by the kernel for use in suspend/resume.

Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-10-18 07:10:10 +10:00
Keith Packard
0790d5e148 i915: remove settable use_mi_batchbuffer_start
The driver can know what hardware requires MI_BATCH_BUFFER vs
MI_BATCH_BUFFER_START; there's no reason to let user mode configure this.

Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-10-18 07:10:10 +10:00
Harvey Harrison
80a914dc05 misc: replace __FUNCTION__ with __func__
__FUNCTION__ is gcc-specific, use __func__

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-16 11:21:30 -07:00
Dave Airlie
c0e09200dc drm: reorganise drm tree to be more future proof.
With the coming of kernel based modesetting and the memory manager stuff,
the everything in one directory approach was getting very ugly and
starting to be unmanageable.

This restructures the drm along the lines of other kernel components.

It creates a drivers/gpu/drm directory and moves the hw drivers into
subdirectores. It moves the includes into an include/drm, and
sets up the unifdef for the userspace headers we should be exporting.

Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-07-14 10:45:01 +10:00