- 26 Jun, 2013 1 commit
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Marcelo Tosatti authored
Booting a 64-vcpu KVM guest, with CONFIG_PREEMPT_VOLUNTARY, can result in a soft lockup: BUG: soft lockup - CPU#41 stuck for 67s! [setfont:1505] RIP: 0010:[<ffffffff812c48da>] [<ffffffff812c48da>] vgacon_do_font_op.clone.0+0x1ba/0x550 This is due to the 8192 (cmapsz) IO operations taking longer than expected due to lock contention in QEMU. Add conditional resched points in between writes allowing other tasks to execute. Signed-off-by:
Marcelo Tosatti <mtosatti@redhat.com> Cc: stable@vger.kernel.org Signed-off-by:
Dave Airlie <airlied@redhat.com>
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- 25 Jun, 2013 5 commits
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Daniel Vetter authored
Drivers are allowed (actually have to) disable unrelated crtcs in their ->set_config callback (when we steal all the connectors from that crtc). If they do that they'll clear crtc->fb to NULL. Which results in a refcount leak, since the drm core is keeping track of that reference. To fix this track the old fb of all crtcs and adjust references for all of them. Of course, since we only hold an additional reference for the fb for the current crtc we need to increase refcounts before we drop the old one. This approach has the benefit that it inches us a bit closer to an atomic modeset world, where we want to update the config of all crtcs in one step. This regression has been introduce in the framebuffer refcount conversion, specifically in commit b0d12325 Author: Daniel Vetter <daniel.vetter@ffwll.ch> Date: Tue Dec 11 01:07:12 2012 +0100 drm: refcounting for crtc framebuffers Reported-by:
Russell King <linux@arm.linux.org.uk> Cc: Russell King <linux@arm.linux.org.uk> Cc: stable@vger.kernel.org Signed-off-by:
Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by:
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Daniel Vetter authored
Historically drm lacked fb refcounting, so the updating of crtc->fb was done by the lower levels at a point convenient to get their own refcounting (e.g. refcounts for the underlying gem bo, pinning refcounts) right. With the introduction of refcounted fbs the drm core handled the fb refcounts, but still relied on drivers to update the crtc->fb pointer (this approach required the least invasive changes in drivers). Enforce this contract with a WARN_ON. Signed-off-by:
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Daniel Vetter authored
Atm the crtc helper implementation of set_config has really inconsisten semantics: If just an fb update is good enough, dpms state will be left as-is, but if we do a full modeset we force everything to dpms on. This change has already been applied to the i915 modeset code in commit e3de42b6 Author: Imre Deak <imre.deak@intel.com> Date: Fri May 3 19:44:07 2013 +0200 drm/i915: force full modeset if the connector is in DPMS OFF mode which according to Greg KH seems to aim for a new record in most Bugzilla: links in a commit message. The history of this dpms forcing is pretty interesting. This patch here is an almost-revert of commit 811aaa55 Author: Keith Packard <keithp@keithp.com> Date: Thu Feb 3 16:57:28 2011 -0800 drm: Only set DPMS ON when actually configuring a mode which fixed the bug of trying to dpms on disabled outputs, but introduced the new discrepancy between an fb update only and full modesets. The actual introduction of this goes back to commit bf9dc102 Author: Keith Packard <keithp@keithp.com> Date: Fri Nov 26 10:45:58 2010 -0800 drm: Set connector DPMS status to ON in drm_crtc_helper_set_config And if you'd dig around in the i915 driver code there's even more fun around forcing dpms on and losing our heads and temper of the resulting inconsistencies. Especially the DP re-training code had tons of funny stuff in it. Signed-off-by:
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Daniel Vetter authored
... since we already check for fb->pixel_format, which encodes all this. The other two fields are only for backwards compat of older drivers (and we might want to look into eventually just killing them). Signed-off-by:
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Daniel Vetter authored
There's no point in trying to clean up after driver-bugs, so just blow up. Furthermore it's an interface abuse to set no mode but have an fb and aslo to try to set an fb without enough connectors. These two spefici cases of interface abuse have been committed by the fb helper, but that's been fixed meanwhile in commit 7e53f3a4 Author: Daniel Vetter <daniel.vetter@ffwll.ch> Date: Mon Jan 21 10:52:17 2013 +0100 drm/fb-helper: fixup set_config semantics The i915 driver has been shipping since a while with these BUGs with no reports, so should be save. Note that this drops an ugly case where we clear crtc->fb behind the upper levels back and so cause a refcounting mayhem, which Russell Kins spotted while trying to hunt down a drm framebuffer leak. Reported-by:
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- 23 Jun, 2013 1 commit
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Al Viro authored
io_remap_pfn_range already sets this internally. Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:
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- 20 Jun, 2013 2 commits
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Benoit Parrot authored
The preferred_bpp value in currently hard-coded to 16. This causes color corruption on the am335x-evm lcd panel which requires 32 bpp instead. This changes attempts to use the configured bpp value from the DT or built-in panel-info struct. Signed-off-by:
Benoit Parrot <bparrot@ti.com> Acked-by:
Rob Clark <robdclark@gmail.com> Signed-off-by:
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Laurent Pinchart authored
The enabled field has been removed from struct drm_plane. Don't use it in the driver. Signed-off-by:
Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by:
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- 17 Jun, 2013 10 commits
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Christopher Harvey authored
Running mgag200_driver_unload when the driver init fails early on causes functions like drm_mode_config_cleanup to be called. The problem is, drm_mode_config_cleanup crashes because the corresponding init hasn't happend yet. There really isn't anything to cleanup after mgag200_device_init, so we can just pass the error code upwards. Acked-by:
Julia Lemire <jlemire@matrox.com> Signed-off-by:
Christopher Harvey <charvey@matrox.com> Acked-by:
Paul Menzel <paulepanter@users.sourceforge.net> Signed-off-by:
Dave Airlie <airlied@gmail.com>
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Christopher Harvey authored
G200 cards support, at best, 16 colour palleted images for the cursor so we do a conversion in the cursor_set function, and reject cursors with more than 16 colours, or cursors with partial transparency. Xorg falls back gracefully to software cursors in this case. We can't disable/enable the cursor hardware without causing momentary corruption around the cursor. Instead, once the cursor is on we leave it on, and simulate turning the cursor off by moving it offscreen. This works well. Since we can't disable -> update -> enable the cursors, we double buffer cursor icons, then just move the base address that points to the old cursor, to the new. This also works well, but uses an extra page of memory. The cursor buffers are lazily-allocated on first cursor_set. This is to make sure they don't take priority over any framebuffers in case of limited memory. Here is a representation of how the bitmap for the cursor is mapped in G200 memory : Each line of color cursor use 6 Slices of 8 bytes. Slices 0 to 3 are used for the 4bpp bitmap, slice 4 for XOR mask and slice 5 for AND mask. Each line has the following format: // Byte 0 Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte 6 Byte 7 // // S0: P00-01 P02-03 P04-05 P06-07 P08-09 P10-11 P12-13 P14-15 // S1: P16-17 P18-19 P20-21 P22-23 P24-25 P26-27 P28-29 P30-31 // S2: P32-33 P34-35 P36-37 P38-39 P40-41 P42-43 P44-45 P46-47 // S3: P48-49 P50-51 P52-53 P54-55 P56-57 P58-59 P60-61 P62-63 // S4: X63-56 X55-48 X47-40 X39-32 X31-24 X23-16 X15-08 X07-00 // S5: A63-56 A55-48 A47-40 A39-32 A31-24 A23-16 A15-08 A07-00 // // S0 to S5 = Slices 0 to 5 // P00 to P63 = Bitmap - pixels 0 to 63 // X00 to X63 = always 0 - pixels 0 to 63 // A00 to A63 = transparent markers - pixels 0 to 63 // 1 means colour, 0 means transparent Signed-off-by:Mathieu Larouche <mathieu.larouche@matrox.com> Acked-by:
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Ville Syrjälä authored
Many of the drivers didn't implement palette/gamma handling, but were forced to provide stubs for the hooks to avoid drm_fb_helper from oopsing. Now that the hooks are optional, we can eliminate all the stubs. Signed-off-by:
Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by:
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Ville Syrjälä authored
Check whether the crtc provides the load_lut callback before calling it. This allows the driver to provide the hook only for those CRTCs that actually have the hardware support for it. Also check whether the driver provided the fb_helper gamma_set/gamma_get hooks. It's a driver bug if it allows non-truecolor fbdev visuals w/o these hooks, but auditing all the drivers is too tedious. So just slap a big WARN_ON() there and bail out before things start to explode. Signed-off-by:
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Ville Syrjälä authored
Perform the drm_fb_helper_is_bound() check to avoid clobbering the display palette of some other KMS client. While at it, fix up the locking by grabbing all modeset locks for the duration of the fb_setcmap operation. v2: Make a note of the locking changes in the commit message Reviewed-by:
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Ville Syrjälä authored
There's a bunch of unused members inside drm_plane, bloating the size of the structure needlessly. Eliminate them. v2: Remove all of it from kernel-doc too Reviewed-by:
Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by:
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Ville Syrjälä authored
plane->enabled is never set, so this code didn't do anything. Also drm_fb_helper_restore_fbdev_mode() will now disable all cursors and sprites for us, so we don't have to bother anymore. Signed-off-by:
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Ville Syrjälä authored
v2: Follow the drm_crtc documentation fixes Signed-off-by:
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Ville Syrjälä authored
Cursors and plane can obscure whatever fbdev wants to show the user. Disable them all in drm_fb_helper_restore_fbdev_mode. After the cursors and planes have been disabled, user space needs to explicitly re-enable them to make them visible again. Signed-off-by:
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Ville Syrjälä authored
drm_plane_force_disable() will forcibly disable the plane even if user had previously requested the plane to be enabled. This can be used to force planes to be off when restoring the fbdev mode. The code was simply pulled from drm_framebuffer_remove(), which now calls the new function as well. v2: Check plane->fb in drm_plane_force_disable(), drop bogus comment about disabling crtc Signed-off-by:
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- 10 Jun, 2013 16 commits
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Ville Syrjälä authored
Having both modes can be beneficial for video playback cases. If you can match the video framerate exactly, and the audio and video clocks come from the same source, you should be able to avoid dropped/repeated frames without expensive operations such as resampling the audio to match video output rate. Rather than add both variants based on the CEA extension short video descriptors in do_cea_modes(), add only one variant there. Once all the EDID has been fully probed, do a loop over the entire probed mode list, during which we add the other variants for all modes that match CEA modes. This allows us to match modes that didn't come via the CEA short video descriptors. For example one Samsung TV here doesn't have the 640x480-60 mode as a SVD, but instead it's specified via a detailed timing descriptor. Signed-off-by:
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Ville Syrjälä authored
We want to disable the cursor by calling ->cursor_set() with handle=0 from places where we don't have a file_priv, so don't try to access it unless necessary. Signed-off-by:
Jakob Bornecrantz <jakob@vmware.com> Signed-off-by:
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Ville Syrjälä authored
Signed-off-by:
Alex Deucher <alexander.deucher@amd.com> Signed-off-by:
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Dave Airlie authored
Merge tag 'drm-intel-next-2013-06-01' of git://people.freedesktop.org/~danvet/drm-intel into drm-next Daniel writes: Another round of drm-intel-next for 3.11. Highlights: - Haswell IPS support (Paulo Zanoni) - VECS support on Haswell (Ben Widawsky, Xiang Haihao, ...) - Haswell watermark fixes (Paulo Zanoni) - "Make the gun bigger again" multithread fence fix from Chris. - i915_error_state finnally no longer fails with -ENOMEM! Big thanks to Mika for tackling this. - vlv sideband locking fixes from Jani - Hangcheck prep work for arb_robustness support (Mika&Chris) - edp vs cpu port confusion clean-up from Imre - pile of smaller fixes and cleanups all over. * tag 'drm-intel-next-2013-06-01' of git://people.freedesktop.org/~danvet/drm-intel: (70 commits) drm/i915: add i915_ips_status debugfs entry drm/i915: add enable_ips module option drm/i915: implement IPS feature drm/i915: fix up the edp power well check drm/i915: add I915_PARAM_HAS_VEBOX to i915_getparam drm/i915: add I915_EXEC_VEBOX to i915_gem_do_execbuffer() drm/i915: add VEBOX into debugfs drm/i915: Enable vebox interrupts drm/i915: vebox interrupt get/put drm/i915: consolidate interrupt naming scheme drm/i915: Convert irq_refounct to struct drm/i915: make PM interrupt writes non-destructive drm/i915: Add PM regs to pre/post install drm/i915: Create an ivybridge_irq_preinstall drm/i915: Create a more generic pm handler for hsw+ drm/i915: add support for 5/6 data buffer partitioning on Haswell drm/i915: properly set HSW WM_LP watermarks drm/i915: properly set HSW WM_PIPE registers drm/i915: fix pch_nop support drm/i915: Vebox ringbuffer init ...
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Ville Syrjälä authored
Keeping the modes sorted by vrefresh before the pixel clock makes the mode list somehow more pleasing to the eye. Signed-off-by:
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Ville Syrjälä authored
Keeping the modes in the same order as we probe them makes it a bit easier to track what's happening. Signed-off-by:
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Ville Syrjälä authored
Preserve the destination mode's list head in drm_mode_copy. Just in case someone decides that it's a good idea to overwrite a mode which happens to be on some list, Signed-off-by:
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Thomas Meyer authored
Signed-off-by:
Thomas Meyer <thomas@m3y3r.de> Signed-off-by:
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Thomas Meyer authored
Signed-off-by:
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Thomas Meyer authored
Signed-off-by:
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git://linuxtv.org/pinchartl/fbdevDave Airlie authored
GEM CMA PRIME support from Laurent. * 'drm/next' of git://linuxtv.org/pinchartl/fbdev: drm: GEM CMA: Add DRM PRIME support drm: GEM CMA: Split object mapping into GEM mapping and CMA mapping drm: GEM CMA: Split object creation into object alloc and DMA memory alloc drm/omap: Use drm_gem_mmap_obj() to implement dma-buf mmap drm/gem: Split drm_gem_mmap() into object search and object mapping
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Ville Syrjälä authored
The structures and strings involved with various pretty-print functions aren't meant to be modified, so make them all const. The exception is drm_connector_enum_list which does get modified in drm_connector_init(). While at it move the drm_get_connector_status_name() prototype from drmP.h to drm_crtc.h where it belongs. Signed-off-by:
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Ville Syrjälä authored
Use drm_get_format_name to print more readable pixel format names in debug output. Also unify the debug messages to say "unsupported pixel format", which better describes what is going on. Signed-off-by:
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Ville Syrjälä authored
Rather than just printing the pixel format as a hex number, decode the fourcc into human readable form, and also decode the LE vs. BE flag. Keep printing the raw hex number too in case it contains non-printable characters. Some examples what the new drm_get_format_name() produces: DRM_FORMAT_XRGB8888: "XR24 little-endian (0x34325258)" DRM_FORMAT_YUYV: "YUYV little-endian (0x56595559)" DRM_FORMAT_RGB565|DRM_FORMAT_BIG_ENDIAN: "RG16 big-endian (0xb6314752)" Unprintable characters: "D??? big-endian (0xff7f0244)" v2: Fix patch author Signed-off-by:
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Maarten Lankhorst authored
This allows importing bo's to own device to work without requiring that the buffer is pinned in GART. Signed-off-by:
Maarten Lankhorst <maarten.lankhorst@canonical.com> Reviewed-by:
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Maarten Lankhorst authored
Prevents buffers from being pinned forever. Signed-off-by:
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- 08 Jun, 2013 5 commits
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Laurent Pinchart authored
Signed-off-by:
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Laurent Pinchart authored
The CMA-specific mapping code will be used to implement dma-buf mmap support. Signed-off-by:
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Laurent Pinchart authored
This allows creating a GEM CMA object without an associated DMA memory buffer, and will be used to implement DRM PRIME support. Signed-off-by:
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Laurent Pinchart authored
The dma-buf mmap code was copied from the GEM mmap implementation. Replace it with the new drm_gem_mmap_obj() function. Signed-off-by:
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Laurent Pinchart authored
The drm_gem_mmap() function first finds the GEM object to be mapped based on the fake mmap offset and then maps the object. Split the object mapping code into a standalone drm_gem_mmap_obj() function that can be used to implement dma-buf mmap() operations. Signed-off-by:
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