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2011-01-11drm/i915: Mask USER interrupts on gen6 (until required)Chris Wilson
Otherwise we may consume 20% of the CPU just handling IRQs whilst rendering. Ouch. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11drm/i915: Handle ringbuffer stalls when flushingChris Wilson
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11drm/i915: Enforce write ordering through the GTTChris Wilson
We need to ensure that writes through the GTT land before any modification to the MMIO registers and so must impose a mandatory write barrier when flushing the GTT domain. This was revealed by relaxing the write ordering by experimentally mapping the registers and the GATT as write-combining. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11drm/i915: Remove impossible testChris Wilson
As has_gem is unconditionally set to true, the conditional immediately following that assignment is superfluous. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11drm/i915: avoid reading non-existent PLL reg on Ironlake+Jesse Barnes
These functions need to be reworked for Ironlake and above, but until then at least avoid reading non-existent registers. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> [ickle: combine with a gratuitous tidy] Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11drm/i915: add 'reset' parameterChris Wilson
When bringing up new hardware, or otherwise experimenting, GPU hangs are a way of life. However, the automatic GPU reset can do more harm than good under these circumstances, as we may wish to capture a full trace for debugging. Based on a patch by Zhenyu Wang. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11drm/i915: fix the wrong latency value while computing wm0Yuanhan Liu
On Ironlake, the LP0 latency is hardcoded and in ns unit, while on Sandybridge, it comes from a register and with unit 0.1 us. So, fix the wrong latency value while computing wm0 on Ironlake and Sandybridge. Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11drm/i915: support low power watermarks on IronlakeJesse Barnes
This patch actually makes the watermark code even uglier (if that's possible), but has the advantage of sharing code between SNB and ILK at least. Longer term we should refactor the watermark stuff into its own file and clean it up now that we know how it's supposed to work. Supporting WM2 on my Vaio reduced power consumption by around 0.5W, so this patch is definitely worthwhile (though it also needs lots of test coverage). Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> [ickle: pass the watermark structs arounds] Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11agp/intel: Flush the chipset write buffers when changing GTT baseChris Wilson
Flush the chipset write buffers before and after adjusting the GTT base register, just in case. We only modify this value upon initialisation (boot and resume) so there should be no outstanding writes, however there are always those persistent PGTBL_ER that keep getting reported upon resume. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11drm/i915: Workaround erratum on i830 for TAIL pointer within last 2 cachelinesChris Wilson
On i830 if the tail pointer is set to within 2 cachelines of the end of the buffer, the chip may hang. So instead if the tail were to land in that location, we pad the end of the buffer with NOPs, and start again at the beginning. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11drm/i915: Use the mappable sizes determined by GTT for consistency.Chris Wilson
There should be no difference, but we can eliminate redundant code. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11drm/i915: support overclocking on Sandy BridgeJesse Barnes
In some configuration, the PCU may allow us to overclock the GPU. Check for this case and adjust the max frequency as appropriate. Also initialize the min/max frequencies to default values as indicated by hardware. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11drm/i915/lvds: Always use 0 to disable the pfit controllerChris Wilson
... and just any combination of bits & ~PFIT_ENABLE. This way we do not attempt disable to the panel fitter controller uselessly upon intel_lvds_disable(). Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11drm/i915/panel: Only record the backlight level when it is enabledChris Wilson
By tracking the current status of the backlight we can prevent recording the value of the current backlight when we have disabled it. And so prevent restoring it to 'off' after an unbalanced sequence of intel_lvds_disable/enable. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=22672 Tested-by: Alex Riesen <raa.lkml@gmail.com> Tested-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: stable@kernel.org
2011-01-11HID: hid-multitouch: minor fixes based on additional reviewBenjamin Tissoires
* amended Kconfig (PixCir and Hanvon are the same panel but with different name) * insert field name in mt_class and retrieving it in mt_probe * add 2 quirks: MT_QUIRK_VALID_IS_INRANGE, MT_QUIRK_VALID_IS_CONFIDENCE, in order to find the field "valid" * inlined slot_is_contactid and slot_is_contact_number * cosmetics changes (tabs and comments) * do not send unnecessary properties once the touch is up Signed-off-by: Benjamin Tissoires <benjamin.tissoires@enac.fr> Acked-by: Henrik Rydberg <rydberg@euromail.se> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-01-11drm/i915/sdvo: Defer detection of output capabilities until probingChris Wilson
Alex Fiestas reported an issue with his HDMI connector being misdetected as DVI unless he had something connected upon boot. By moving the decision as to whether to use HDMI or DVI encoding for the HDMI capable output until we probe the monitor means that we should avoid sending a HDMI signal to a DVI monitor and also correctly detect hardware like Alex's. However, to really determine what connector is soldered onto the wire we need to inspect the VBT sdvo child devices - but can we trust it? Reported-by: Alex Fiestas <alex@eyeos.org> Tested-by: Alex Fiestas <alex@eyeos.org> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=32828 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: stable@kernel.org
2011-01-11HID: Switch turbox/mosart touchscreen to hid-mosartBenjamin Tissoires
This device used the MULTI_INPUT quirk whereas it could be used with hid-mosart instead to support the multitouch part. Reference: https://bugs.launchpad.net/ubuntu/+bug/620609/ Signed-off-by: Benjamin Tissoires <benjamin.tissoires@enac.fr> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-01-11HID: add Add Cando touch screen 10.1-inch product idBenjamin Tissoires
This device has been reported to be an hid-cando one. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@enac.fr> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-01-11HID: hid-mulitouch: add support for the 'Sensing Win7-TwoFinger'Benjamin Tissoires
Added support for the 'Sensing Win7-TwoFinger' panel by GeneralTouch found on some tablets. Because of conflicting VID/PID, this conflicts with previous support for some single-touch panels by GeneralTouch Signed-off-by: Benjamin Tissoires <benjamin.tissoires@enac.fr> Signed-off-by: Stéphane Chatty <chatty@enac.fr> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-01-11drm/i915: fix calculation of eDP signal levels on SandybridgeYuanhan Liu
Some voltage swing/pre-emphasis level use the same value on eDP Sandybridge, like 400mv_0db and 600mv_0db are with the same value of (0x0 << 22). So, fix them, and point out the value if it isn't a supported voltage swing/pre-emphasis level. Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: stable@kernel.org
2011-01-11HID: hid-multitouch: add support for Cypress TrueTouch panelsBenjamin Tissoires
Added support for Cypress TrueTouch panels, which detect up to 10 fingers Signed-off-by: Benjamin Tissoires <benjamin.tissoires@enac.fr> Signed-off-by: Stéphane Chatty <chatty@enac.fr> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-01-11HID: hid-multitouch: support for PixCir-based panelsBenjamin Tissoires
Created a driver for PixCir based dual-touch panels, including the one in the Hanvon tablet. This is done in a code structure aimed at unifying support for several existing HID multitouch panels. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@enac.fr> Signed-off-by: Stéphane Chatty <chatty@enac.fr> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-01-11HID: set HID_MAX_FIELD at 128Benjamin Tissoires
Stantums multitouch panels sends more than 64 reports and this results in not being able to handle all the touches given by this device. This patch is required to be able to include Stantum panels in the unified hid-multitouch driver. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@enac.fr> Acked-by: Henrik Rydberg <rydberg@euromail.se> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-01-11HID: add feature_mapping callbackBenjamin Tissoires
Currently hid doesn't export the features it knows to the specific modules. Some information can be really important in such features: MosArt and Cypress devices are by default not in a multitouch mode. We have to send the value 2 on the right feature. This patch exports to the module the features report so they can find the right feature to set up the correct mode. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@enac.fr> Acked-by: Henrik Rydberg <rydberg@euromail.se> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-01-11drm/i915/crt: Check for a analog monitor in case of DVI-IDavid Müller
Since Linux 2.6.36 the digital output on my system (855GME + DVI-I) is not working any longer. The analog output is always activated regardless of the type of monitor attached. The culprit seems to be intel_crt_detect_ddc(), which returns true as soon as an ACK from the EDID device is received. Obviously this approach does not work with DVI-I where the analog and digital outputs share a common DDC bus. In a similar manner to the shared DDC wire, ala the "Mac Mini Hack", we need an additional check to make sure that there really is an analog device attached to the DDC. Signed-off-by: David Müller <d.mueller@elsoft.ch> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: stable@kernel.org
2011-01-11drm/i915: make DP training try a little harderJesse Barnes
When trying to do channel equalization, we need to make sure we still have clock recovery on all lanes while training. We also need to try clock recovery again if we lose the clock or if channel eq fails 5 times. We'll try clock recovery up to 5 more times before giving up entirely. Gets suspend/resume working on my Vaio again and brings us back into compliance with the DP training sequence spec. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11drm/i915: check eDP encoder correctly when setting modesJesse Barnes
We were using a stale pointer in the check which caused us to use CPU attached DP params when we should have been using PCH attached params. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=31988 Tested-by: Jan-Hendrik Zab <jan@jhz.name> Tested-by: Christoph Lukas <christoph.lukas@gmx.net> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: stable@kernel.org
2011-01-11PNP / ACPI: Use DEVICE_ACPI_HANDLE() for device ACPI handle accessRafael J. Wysocki
The PNP ACPI driver squirrels the ACPI handles of PNP devices' ACPI companions, but this isn't correct, because those handles should be accessed using the DEVICE_ACPI_HANDLE() macro operating on struct device objects. Using DEVICE_ACPI_HANDLE() in the PNP ACPI driver instead of the driver's own copies of the ACPI handles allows us to avoid a problem with docking stations where a machine docked before suspend to RAM and undocked while suspended crashes during the subsequent resume (in that case the ACPI companion of the PNP device in question doesn't exist any more while the device is being resumed). It also allows us to avoid the problem where suspend to RAM fails when the machine was undocked while suspended before (again, the ACPI companion of the PNP device is not present any more while it is being suspended). This change doesn't fix all of the the PNP ACPI driver's problems with PNP devices in docking stations (generally speaking, the driver has no idea that devices can come and go and doesn't even attempt to handle such events), but at least it makes suspend work for the users of docking stations who don't use the PNP devices located in there. References: https://bugzilla.kernel.org/show_bug.cgi?id=15100 Reported-and-tested-by: Toralf Förster <toralf.foerster@gmx.de> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Len Brown <len.brown@intel.com>
2011-01-11ext4: fix trimming starting with block 0 with small blocksizeJan Kara
When s_first_data_block is not zero (which happens e.g. when block size is 1KB) and trim ioctl is called to start trimming from block 0, the math in ext4_get_group_no_and_offset() overflows. The overall result is that ioctl returns EINVAL which is kind of unexpected and we probably don't want userspace tools to bother with internal details of filesystem structure. So just silently increase starting offset (and shorten length) when starting block is below s_first_data_block. CC: Lukas Czerner <lczerner@redhat.com> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2011-01-11xen/p2m: Fix module linking error.Konrad Rzeszutek Wilk
Fixes: ERROR: "m2p_find_override_pfn" [drivers/block/xen-blkfront.ko] undefined! Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2011-01-11nfsd4: allow restarting callbacksJ. Bruce Fields
If we lose the backchannel and then the client repairs the problem, resend any callbacks. We use a new cb_done flag to track whether there is still work to be done for the callback or whether it can be destroyed with the rpc. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2011-01-11nfsd4: simplify nfsd4_cb_prepareJ. Bruce Fields
Remove handling for a nonexistant case (status && !-EAGAIN). Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2011-01-11nfsd4: give out delegations more quickly in 4.1 caseJ. Bruce Fields
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2011-01-11nfsd4: add helper function to run callbacksJ. Bruce Fields
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2011-01-11nfsd4: make sure sequence flags are set after destroy_sessionJ. Bruce Fields
If this loses any backchannel, make sure we have a chance to notice that and set the sequence flags. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2011-01-11nfsd4: re-probe callback on connection lossJ. Bruce Fields
This makes sure we set the sequence flag when necessary. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2011-01-11nfsd4: set sequence flag when backchannel is downJ. Bruce Fields
Implement the SEQ4_STATUS_CB_PATH_DOWN flag. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2011-01-11nfsd4: keep finer-grained callback statusJ. Bruce Fields
Distinguish between when the callback channel is known to be down, and when it is not yet confirmed. This will be useful in the 4.1 case. Also, we don't seem to be using the fact that this field is atomic. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2011-01-11rpc: allow xprt_class->setup to return a preexisting xprtJ. Bruce Fields
This allows us to reuse the xprt associated with a server connection if one has already been set up. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2011-01-11rpc: keep backchannel xprt as long as server connectionJ. Bruce Fields
Multiple backchannels can share the same tcp connection; from rfc 5661 section 2.10.3.1: A connection's association with a session is not exclusive. A connection associated with the channel(s) of one session may be simultaneously associated with the channel(s) of other sessions including sessions associated with other client IDs. However, multiple backchannels share a connection, they must all share the same xid stream (hence the same rpc_xprt); the only way we have to match replies with calls at the rpc layer is using the xid. So, keep the rpc_xprt around as long as the connection lasts, in case we're asked to use the connection as a backchannel again. Requests to create new backchannel clients over a given server connection should results in creating new clients that reuse the existing rpc_xprt. But to start, just reject attempts to associate multiple rpc_xprt's with the same underlying bc_xprt. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2011-01-11rpc: move sk_bc_xprt to svc_xprtJ. Bruce Fields
This seems obviously transport-level information even if it's currently used only by the server socket code. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2011-01-11nfsd4: allow backchannel recoveryJ. Bruce Fields
Now that we have a list of connections to choose from, we can teach the callback code to just pick a suitable connection and use that, instead of insisting on forever using the connection that the first create_session was sent with. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2011-01-11nfsd4: support BIND_CONN_TO_SESSIONJ. Bruce Fields
Basic xdr and processing for BIND_CONN_TO_SESSION. This adds a connection to the list of connections associated with a session. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2011-01-11nfsd4: modify session list under cl_lockJ. Bruce Fields
We want to traverse this from the callback code. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2011-01-11Documentation: fl_mylease no longer existsJ. Bruce Fields
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2011-01-11Merge commit 'v2.6.37' into for-2.6.38-incomingJ. Bruce Fields
I made a slight mess of Documentation/filesystems/Locking; resolve conflicts with upstream before fixing it up.
2011-01-11ext4: revert buggy trim overflow patchTheodore Ts'o
This reverts commit 4f531501e44: ext4: fix possible overflow in ext4_trim_fs() Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2011-01-11Merge branch 'for-linus-merged' of git://oss.sgi.com/xfs/xfsLinus Torvalds
* 'for-linus-merged' of git://oss.sgi.com/xfs/xfs: (47 commits) xfs: convert grant head manipulations to lockless algorithm xfs: introduce new locks for the log grant ticket wait queues xfs: convert log grant heads to atomic variables xfs: convert l_tail_lsn to an atomic variable. xfs: convert l_last_sync_lsn to an atomic variable xfs: make AIL tail pushing independent of the grant lock xfs: use wait queues directly for the log wait queues xfs: combine grant heads into a single 64 bit integer xfs: rework log grant space calculations xfs: fact out common grant head/log tail verification code xfs: convert log grant ticket queues to list heads xfs: use AIL bulk delete function to implement single delete xfs: use AIL bulk update function to implement single updates xfs: remove all the inodes on a buffer from the AIL in bulk xfs: consume iodone callback items on buffers as they are processed xfs: reduce the number of AIL push wakeups xfs: bulk AIL insertion during transaction commit xfs: clean up xfs_ail_delete() xfs: Pull EFI/EFD handling out from under the AIL lock xfs: fix EFI transaction cancellation. ...
2011-01-11xen p2m: clear the old pte when adding a page to m2p_overrideJeremy Fitzhardinge
When adding a page to m2p_override we change the p2m of the page so we need to also clear the old pte of the kernel linear mapping because it doesn't correspond anymore. When we remove the page from m2p_override we restore the original p2m of the page and we also restore the old pte of the kernel linear mapping. Before changing the p2m mappings in m2p_add_override and m2p_remove_override, check that the page passed as argument is valid and return an error if it is not. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2011-01-11xen gntdev: use gnttab_map_refs and gnttab_unmap_refsStefano Stabellini
Use gnttab_map_refs and gnttab_unmap_refs to map and unmap the grant ref, so that we can have a corresponding struct page. Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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