When converting this to the new wait_for macro I inverted the wait
condition, which causes all sorts of problems. So correct it to fix
several failures caused by the bad wait (flickering, bad output
detection, tearing, etc.).
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Tested-by: Sitsofe Wheeler <sitsofe@yahoo.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* 'drm-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (33 commits)
drm/radeon/kms: fix typo in radeon_compute_pll_gain
drm/radeon/kms: try to detect tv vs monitor for underscan
drm/radeon/kms: fix sideport detection on newer rs880 boards
drm/radeon: fix passing wrong type to gem object create.
drm/radeon/kms: set encoder type to DVI for HDMI on evergreen
drm/radeon/kms: add back missing break in info ioctl
drm/radeon/kms: don't enable MSIs on AGP boards
drm/radeon/kms: fix agp mode setup on cards that use pcie bridges
drm: move dereference below check
drm: fix end of loop test
drm/radeon/kms: rework radeon_dp_detect() logic
drm/radeon/kms: add missing asic callback assignment for evergreen
drm/radeon/kms/DCE3+: switch pads to ddc mode when going i2c
drm/radeon/kms/pm: bail early if nothing's changing
drm/radeon/kms/atom: clean up dig atom handling
drm/radeon/kms: DCE3/4 transmitter fixes
drm/radeon/kms: rework encoder handling
drm/radeon/kms: DCE3/4 AdjustPixelPll updates
drm/radeon: Fix stack data leak
drm/radeon/kms: fix GTT/VRAM overlapping test
...
* 'nouveau/for-airlied' of /ssd/git/drm-nouveau-next:
drm/nouveau: fix earlier mistake when fixing merge conflict
drm/nvc0: fix thinko in instmem suspend/resume
drm/nouveau: Workaround missing GPIO tables on an Apple iMac G4 NV18.
drm/nouveau: Add TV-out quirk for an MSI nForce2 IGP.
drm/nv50-nvc0: ramht_size is meant to be in bytes, not entries
drm/nouveau: punt some more log messages to debug level
drm/nouveau: remove warning about unknown tmds table revisions
drm/nouveau: check for error when allocating/mapping dummy page
drm/nouveau: fix race condition when under memory pressure
drm/nv50: fix minor thinko from nvc0 changes
drm/nouveau: Don't try DDC on the dummy I2C channel.
Looks like this got copied from the ddx wrong.
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
When enabling underscan for hdmi monitors, attempt to detect
whether we are driving a TV or a monitor. The should hopefully
prevent underscan from being enabled on monitors attached via
hdmi that do not overscan the image. Only enable underscan
if the mode is a common hdtv mode (480p, 720p, etc.).
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
The meaning of ucMemoryType changed on recent boards, however,
ulBootUpSidePortClock should be set properly across all boards.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
We are passing a ttm type when we want to pass true/false.
Reported-by: Dr. David Alan Gilbert <linux@treblig.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel: (58 commits)
drm/i915,intel_agp: Add support for Sandybridge D0
drm/i915: fix render pipe control notify on sandybridge
agp/intel: set 40-bit dma mask on Sandybridge
drm/i915: Remove the conflicting BUG_ON()
drm/i915/suspend: s/IS_IRONLAKE/HAS_PCH_SPLIT/
drm/i915/suspend: Flush register writes before busy-waiting.
i915: disable DAC on Ironlake also when doing CRT load detection.
drm/i915: wait for actual vblank, not just 20ms
drm/i915: make sure eDP PLL is enabled at the right time
drm/i915: fix VGA plane disable for Ironlake+
drm/i915: eDP mode set sequence corrections
drm/i915: add panel reset workaround
drm/i915: Enable RC6 on Ironlake.
drm/i915/sdvo: Only set is_lvds if we have a valid fixed mode.
drm/i915: Set up a render context on Ironlake
drm/i915 invalidate indirect state pointers at end of ring exec
drm/i915: Wake-up wait_request() from elapsed hang-check (v2)
drm/i915: Apply i830 errata for cursor alignment
drm/i915: Only update i845/i865 CURBASE when disabled (v2)
drm/i915: FBC is updated within set_base() so remove second call in mode_set()
...
This one is missed in last pipe control fix for sandybridge,
that really unmask interrupt bit for notify in render engine IMR.
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
We now attempt to free "active" objects following a GPU hang as either
the GPU will be reset or the hang is permenant. In either case, the GPU
writes will not be flushed to main memory and it should be safe to
return that memory back to the system.
The BUG_ON(active) is thus overkill and can erroneously fire after a
EIO.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Eric Anholt <eric@anholt.net>
For the shared paths on the next generation chipsets.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Eric Anholt <eric@anholt.net>
Like on Sandybridge, disabling the DAC here when doing CRT load detect
avoids forever hangs waiting on the hardware.
test procedure on HP 2740p:
boot with no VGA plugged in, start X,
plug in VGA monitor (1280x1024)
chvt 3
machine hangs waiting forever.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Waiting for a hard coded 20ms isn't always enough to make sure a vblank
period has actually occurred, so add code to make sure we really have
passed through a vblank period (or that the pipe is off when disabling).
This prevents problems with mode setting and link training, and seems to
fix a bug like https://bugs.freedesktop.org/show_bug.cgi?id=29278, but
on an HP 8440p instead. Hopefully also fixes
https://bugs.freedesktop.org/show_bug.cgi?id=29141.
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
Fixes the pink line that shows up with some hdmi monitors. This
will need to be revisited when audio support is added.
Fixes:
http://bugs.freedesktop.org/show_bug.cgi?id=27452
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Noone is using tty argument so let's get rid of it.
Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Acked-by: Jason Wessel <jason.wessel@windriver.com>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This seems to have gotten lost in the hyper-z merge.
Noticed by legume on IRC.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Asics that use an AGP to PCIE bridge don't have the AGP_STATUS
register so just use whatever mode the host side setup.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: Jerome Glisse <glisse@freedesktop.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
"fb_helper_conn" is dereferenced before the check for NULL. It's never
actually NULL here, so this is mostly to keep the static checkers happy.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
"agpmem" is never NULL here because it is the list cursor of a
list_for_each_entry() list.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
If the connector is eDP, it can only be DP, not TMDS.
Always set the detected sink type. If the sink is
detected as non-DP, but there is no EDID, you can still
manually force the port on. If the sink type is DP
and there's no DPCD, there's no way to force the monitor
on since you need both ends to train the link.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
The pins for ddc and aux are shared so you need to switch the
mode when doing ddc. The ProcessAuxChannel table already sets
the pin mode to DP. This should fix unreliable ddc issues
on DP ports using non-DP monitors.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
This allows the tables to be run in some additional cases
where the connector info isn't necessary.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
- INIT action takes the actual connector type id, not the enum id
- some evergreen cards have the ENABLE_OUTPUT/DISABLE_OUTPUT actions
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
On most newer asics, digital encoders have two links each
and they can be used independantly. As such, treat them as
separate encoders otherwise the individual links will not
get programmed properly at modeset time.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Add options necessary bits for:
- SS on DP
- SS on LVDS
- set clocks right for DP
- deep color on hdmi (needs additional encoder and edid work as well)
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Always zero-init a structure on the stack which is returned by a
function. Otherwise you may leak random stack data from previous
function calls.
This fixes the following warning I was seeing:
CC [M] drivers/gpu/drm/radeon/radeon_atombios.o
drivers/gpu/drm/radeon/radeon_atombios.c: In function "radeon_atom_get_hpd_info_from_gpio":
drivers/gpu/drm/radeon/radeon_atombios.c:261: warning: "hpd.plugged_state" is used uninitialized in this function
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: David Airlie <airlied@linux.ie>
Cc: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
GTT/VRAM overlapping test had a typo which leaded to not
detecting case when vram_end > gtt_end. This patch fix the
logic and should fix#16574
Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
We need to make sure the eDP PLL is enabled before the pipes or planes,
so do it as part of the DP prepare mode set function.
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
We need to use I/O port instructions to access VGA registers on
Ironlake+, and it doesn't hurt on other platforms, so switch the VGA
plane disable function over to using them. Move it to init time as well
while we're at it, no need to repeatedly disable the VGA plane with
every mode set and DPMS event.
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
We should disable the panel first when shutting down an eDP link. And
when turning one on, the panel needs to be enabled before link training
or eDP I/O won't be enabled.
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Ironlake requires that we clear the reset panel bit during power
sequences and restore it afterwards. Uncondtionally add code to do that
since it should be harmless on SNB+.
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
With the current screwed but its ABI, ioctls for the drm, Linus pointed out that we could allow userspace to specify the allocation size, but we pass it to the driver which then uses it blindly to store a struct. Now if userspace specifies the allocation size as smaller than the driver needs, the driver can possibly overwrite memory.
This patch restructures the driver ioctls so we store the structure size we are expecting, and make sure we allocate at least that size. The copy from/to userspace are still restricted to the size the user specifies, this allows ioctl structs to grow on both sides of the equation.
Up until now we didn't really use the DRM_IOCTL defines in the kernel, so this cleans them up and adds them for nouveau.
v2:
fix nouveau pushbuf arg (thanks to Ben for pointing it out)
Reported-by: Linus Torvalds <torvalds@linuxfoundation.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
non-critical issue, CVE-2010-2803
Userspace controls the amount of memory to be allocate, so it can
get the ioctl to allocate more memory than the kernel uses, and get
access to kernel stack. This can only be done for processes authenticated
to the X server for DRI access, and if the user has DRI access.
Fix is to just memset the data to 0 if the user doesn't copy into
it in the first place.
Reported-by: Kees Cook <kees@ubuntu.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This should fix the reported TV-out load detection false positives
(fdo bug 29455).
Reported-by: Vlado Plaga <rechner@vlado-do.de>
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
The blob also thinks there's a TV connected, so hardware bug...
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This message is apparently confusing people, and is being blamed for some
modesetting issues. Lets remove the message, and instead replace it
with an unconditional printout of the table revision.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
When VRAM is running out it's possible that the client's push buffers get
evicted to main memory. When they're validated back in, the GPU may
be used for the copy back to VRAM, but the existing synchronisation code
only deals with inter-channel sync, not sync between PFIFO and PGRAPH on
the same channel. This leads to PFIFO fetching from command buffers that
haven't quite been copied by PGRAPH yet.
This patch marks push buffers as so, and forces any GPU-assisted buffer
moves to be done on a different channel, which triggers the correct
synchronisation to happen before we submit them.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
* git://git.infradead.org/~dwmw2/ideapad-2.6:
Call acpi_video_register() in intel_opregion_init() failure path
ideapad: Only allow camera state to be set to 0 or 1
ideapad: Stop using global variables
Add Lenovo ideapad driver
If i915 opregion is present, the acpi_video driver doesn't register
itself immediately; it defers that until the i915 opregion code is done.
But if that *fails*, the acpi_video driver was never getting registered.
And thus I have no backlight support on my Lenovo IdeaPad S10-3.
Call acpi_video_register() on the failure path, and it works again.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Acked-by: Matthew Garrett <mjg@redhat.com>
* 'drm-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (55 commits)
io-mapping: move asm include inside the config option
vgaarb: drop vga.h include
drm/radeon: Add probing of clocks from device-tree
drm/radeon: drop old and broken mesa warning
drm/radeon: Fix pci_map_page() error checking
drm: Remove count_lock for calling lastclose() after 58474713 (v2)
drm/radeon/kms: allow FG_ALPHA_VALUE on r5xx
drm/radeon/kms: another r6xx/r7xx CS checker fix
DRM: Replace kmalloc/memset combos with kzalloc
drm: expand gamma_set
drm/edid: Split mode lists out to their own header for readability
drm/edid: Rewrite mode parse to use the generic detailed block walk
drm/edid: Add detailed block walk for VTB extensions
drm/edid: Add detailed block walk for CEA extensions
drm: Remove unused fields from drm_display_info
drm: Use ENOENT consistently for the error return for an unmatched handle.
drm/radeon/kms: mark 3D power states as performance
drm: Only set DPMS once on the CRTC not after every encoder.
drm/radeon/kms: add additional quirk for Acer rv620 laptop
drm: Propagate error code from fb_create()
...
Fix up trivial conflicts in drivers/gpu/drm/drm_edid.c
When we find no ROM we understand and a device-tree is present, see
if we can retreive clock info from there.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This never really got fixed in mesa, and the kernel deals with the problem
just fine, so don't got reporting things that confuse people.
Signed-off-by: Dave Airlie <airlied@redhat.com>
0 is a valid DMA address from pci_map_page(), use pci_dma_mapping_error()
instead to check for errors
[airlied: fix warning + two other places with errors.]
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This is a CS checker fix. I need this for FP16 alpha-test.
Signed-off-by: Marek Olšák <maraeo@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
add default case for buffer formats
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: Andre Maasikas <amaasikas@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Currently most, if not all, memory allocation in drm_bufs.c is followed by initializing the memory with 0.
Replace the use of kmalloc+memset with kzalloc.
Signed-off-by: Davidlohr Bueso <dave@gnu.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Jesse's initial patch commit said:
"At panic time (i.e. when oops_in_progress is set) we should try a bit
harder to update the screen and make sure output gets to the VT, since
some drivers are capable of flipping back to it.
So make sure we try to unblank and update the display if called from a
panic context."
I've enhanced this to add a flag to the vc that console layer can set to
indicate they want this behaviour to occur. This also adds support to
fbcon for that flag and adds an fb flag for drivers to indicate they want
to use the support. It enables this for KMS drivers.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Acked-by: James Simmons <jsimmons@infradead.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Expand the crtc_gamma_set function to accept a starting offset. The
reason for this is to eventually use this function for setcolreg from
drm_fb_helper.c. The fbdev colormap function can start at any offset in
the color map.
Signed-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This brings us in line with the EDID spec recommendation for mode
priority sorting. We still don't extract all the modes we could from
VTB, but VTB is so rare in the wild that I'm not really concerned.
Signed-off-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This is consistent with trying to access a filename that not exist
within a directory which is a good analogy here. The main reason for the
change is that it is easy to confuse the error code of EBADF as an
performing an ioctl on an invalid file descriptor (rather than an
unknown object).
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Fixes lack of power saving with multiple heads on
some desktop cards.
Fixes:
https://bugzilla.kernel.org/show_bug.cgi?id=16474
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Change the interface to expect a PTR_ERR specifing the real error code
as opposed to assuming a NULL return => -EINVAL. Just once the user may
not be at fault!
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Smatch complained that the ERR_PTR from hwmon_device_register() wasn't
handled. I added some error handling in radeon_hwmon_init() to silence
the warning.
Unfortunately errors from radeon_pm_init() aren't handled so this
doesn't really make a difference beyond silencing the warning.
Also I changed DRM_ERROR() to dev_err() which is the new preferred
method.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
router objects are found on systems that use a mux to control
ddc line to connector routing or to control the actual clock and data
routing from the chip to the connectors. This patch implements ddc line
routing.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Handle asic specific table to hw mappings in
combios_setup_i2c_bus() directly. This allows us
to remove most of the combios quirks and clean up
the i2c bus setup.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Previously we added i2c buses as needed when enumerating connectors
power management, etc. This only exposed the actual buses used and
could have lead to the same buse getting created more than once if
one buses was used for more than one purpose. This patch sets up
all i2c buses on the card in one place and users of the buses just
point back to the one instance.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
- buffer offsets in the base regs are 256b aligned so
shift properly when comparing, fixed by Andre Maasikas
- mipmap size was calculated wrong when nlevel=0
- texture bo offsets were used after the bo base address was added
- vertex resource size register is size - 1, not size
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: Andre Maasikas <amaasikas@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
(For some reason I thought that went in ages ago ...)
This fixes support for PCI domains in what should hopefully be a backward
compatible way along with a change to libdrm.
When the interface version is set to 1.4, we assume userspace understands
domains and the world is at peace. We thus pass proper domain numbers
instead of 0 to userspace.
The newer libdrm will then try 1.4 first, and fallback to 1.1, along with
ignoring domains in the later case (well, except on alpha of course)
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
* 'nouveau/for-airlied' of /ssd/git/drm-nouveau-next: (27 commits)
drm/nvc0: fix typo in PRAMIN flush
drm/nouveau: Fix DCB TMDS config parsing.
drm/nv30: Fix PFB init for nv31.
drm/nv04: Fix up SGRAM density detection.
drm/i2c/ch7006: Don't use POWER_LEVEL_FULL_POWER_OFF on early chip versions.
drm/nouveau: Init dcb->or on cards that have no usable DCB table.
drm/nouveau: reduce severity of some "error" messages
drm/nvc0: backup bar3 channel on suspend
drm/nouveau: implement init table opcodex 0x5e and 0x9a
drm/nouveau: implement init table op 0x57, INIT_LTIME
drm/nvc0: implement crtc pll setting
drm/nvc0: fix evo dma object so we display something
drm/nvc0: rudimentary instmem support
drm/nvc0: implement memory detection
drm/nvc0: allow INIT_GPIO
drm/nvc0: starting point for GF100 support, everything stubbed
drm/nv30: Workaround dual TMDS brain damage.
drm/nouveau: No need to set slave TV encoder configs explicitly.
drm/nv17-nv4x: Attempt to init some external TMDS transmitters.
drm/nv10: Fix up switching of NV10TCL_DMA_VTXBUF.
...
This hasn't mattered up until the ioctl started using the value, and it fell
apart.
fixes fd.o 29340, Ubuntu LP 606081
[airlied: cleaned up whitespace and don't need an error before pushing]
Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
RC6 allows the GPU to enter a lower power state when the GPU is idle.
Signed-off-by: Zou Nan hai <nanhai.zou@intel.com>
[anholt: Fixed the !renderctx error path to actually not enable RC6.]
Signed-off-by: Eric Anholt <eric@anholt.net>
If we have failed to ascertain the fixed mode for the LVDS panel, then
trust the pixel clock ranges reported for the connection when determing
valid modes. This makes intel_sdvo_mode_valid() consistent with
intel_lvds_mode_valid() which is also a no-op is there is no fixed mode
defined. (Since the mode is both validated by SDVO and LVDS, why are
checking against an LVDS fixed mode in SDVO...)
By only defining is_lvds to be true when we actually have an LVDS output
with a fixed mode, we avoid various potential NULL deferences where the
assumption is made that all LVDS outputs have a fixed mode.
References:
Bug 29449 - [Q35] failure to read EDID/vbios for LVDS, no mode => no output
https://bugs.freedesktop.org/show_bug.cgi?id=29449
The primary failure in this bug is not finding the EDID and determining
the correct fixed panel mode. However, this patch should fix the
secondary issue of not enabling any of the standard modes for the panel
either.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Eric Anholt <eric@anholt.net>
RC6 power state requires a logical render context in place for saving
render context.
Signed-off-by: Zou Nan hai <nanhai.zou@intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
This is required by the spec, and without this some 3D programs will
hang after resume from RC6 we enable that.
Signed-off-by: Zou Nan hai <nanhai.zou@intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
If our watchdog fires and we see that the GPU is idle, but that we
are still waiting on an interrupt, forcibly wake-up the waiter.
i915_do_wait_request() should not be racy, yet there are persistent
reports that 945GM hangs whilst the GPU is idle. This implies that the
hardware is not quite as coherent as the documentation claims - a write
followed by a flush is supposed to be coherent in main memory before the
flush is retired and the irq is emitted. This seems to be a sensible and
elegant guard to force the wait to timeout.
v2: Daniel Vetter pointed out that a warning would be useful to explain
why the machine appeared to stall.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Eric Anholt <eric@anholt.net>
i830 requires 32bpp cursors to be aligned to 16KB, so we have to expose
the alignment parameter to i915_gem_attach_phys_object().
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Eric Anholt <eric@anholt.net>
The i845 and i865 have a peculiarlity in that CURBASE is not the trigger
for the vsync update of the cursor registers but instead the
modification of that register is prohibited whilst the cursor is
enabled. Reorder the write sequence for CURPOS, CURCNTR and CURBASE on
i845 to i865 to match.
v2: Remove the checks for i845/i865 from within i9xx_cursor_update()
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Eric Anholt <eric@anholt.net>
The FBC is dependent upon a few details of the framebuffer so it is
required to be updated within set_base(), so remove the redundant call
from mode_set().
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Eric Anholt <eric@anholt.net>
Add a new macro, wait_for, to simplify the act of waiting on a register
to change state. wait_for() takes three arguments, the condition to
inspect on every loop, the maximum amount of time to wait and whether to
yield the cpu for a length of time after each check.
v2: Upgrade failure messages to DRM_ERROR on the suggestion of
Eric Anholt. We do not expect to hit these conditions as they reflect
programming errors, so if we do we want to be notified.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Eric Anholt <eric@anholt.net>
The cleanup path for early abort failed to nullify the gem_buffer. The
likely consequence of this is zero, since a failure here should mean
aborting the module load.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Eric Anholt <eric@anholt.net>
Previously, we only remembered to update the watermarks for i9xx, and
incorrectly assumed that the crtc->enabled flag was valid at that point
in the dpms cycle.
Note that on my x201s this makes a SR bug on pipe 1 much easier to hit.
(Since before this patch when disabling pipe 0, we either didn't update
the watermarks at all, or when we did we still thought we had two pipes
enabled and so disabled SR.)
References:
Bug 28969 - [Arrandale] Screen flickers, suspect Self-Refresh
https://bugs.freedesktop.org/show_bug.cgi?id=28969
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Eric Anholt <eric@anholt.net>
Within i915_opregion.c there are two blocks of semantically identical
ASLE response codes defined. Only one of those matches the ACPI IGD
OpRegion Specification 0.1, use those.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Matthew Garrett <mjg59@srcf.ucam.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
shmfs doesn't actually implement i_ops->truncate() so we were not
immedatiately releasing the backing pages when shrinking the gfx cache
under OOM. Instead use a combination of truncate_inode_pages() and
i_ops->truncate_range() as is used by shmem_delete_inode().
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Eric Anholt <eric@anholt.net>
Writing to the DSPBASE register triggers the double-buffered update to
all the control registers, so always write it last in the update
sequence.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Eric Anholt <eric@anholt.net>
