- 18 Oct, 2016 15 commits
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Chris Wilson authored
When handling execbuf relocations, we play a delicate dance with pagefault. We first try to access the user pages underneath our struct_mutex. However, if those pages were inside a GEM object, we may trigger a pagefault and deadlock as i915_gem_fault() tries to recursively acquire struct_mutex. Instead, we choose to disable pagefaulting around the copy_from_user whilst inside the struct_mutex and handle the EFAULT by falling back to a copy outside the struct_mutex. We however presumed that disabling pagefaults would be expensive. It is just an operation on the local current task. Cheap enough that we can restrict the disable/enable to the critical section around the copy, and so avoid having to handle the atomic sections within the relocation handling itself. v2: Just illustrate the broken error handling rather than argue why it is safer to ignore it, for now. Signed-off-by:
Chris Wilson <chris@chris-wilson.co.uk> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com> Reviewed-by:
Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20161018120251.25043-4-chris@chris-wilson.co.uk
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Chris Wilson authored
The scattergather list uses a 32bit size counter, we should avoid exceeding it. v2: Also we should use unsigned int to match sg->length. Fixes: 871dfbd6 ("drm/i915: Allow compaction upto SWIOTLB max segment size") Signed-off-by:
Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20161018120251.25043-3-chris@chris-wilson.co.uk
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Chris Wilson authored
In many places, we try to count pages using a 32 bit integer. That implies if we are asked to create an object larger than 43bits, we will subtly crash much later. Catch this on the boundary, and add a warning to remind ourselves later on our exabyte systems. Signed-off-by:
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Chris Wilson authored
Internally we allow for using more objects than a single process can allocate, i.e. we allow for a 64bit GPU address space even on a 32bit system. Using size_t may oveerflow. Signed-off-by:
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Paulo Zanoni authored
We used to call skl_pipe_pixel_rate(), which used to be a single one-line return, but now we're calling ilk_pipe_pixel_rate() which is not as simple, so it's better to just call it once and store the computed value for reuse. Signed-off-by:
Paulo Zanoni <paulo.r.zanoni@intel.com> Reviewed-by:
Matt Roper <matthew.d.roper@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1475872138-16194-2-git-send-email-paulo.r.zanoni@intel.com
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Paulo Zanoni authored
Luckily, the necessary adjustments for when we're using the scaler are exactly the same as the ones needed on ILK+, so just reuse the function we already have. v2: Invert the patch order so stable backports get easier. Cc: stable@vger.kernel.org Signed-off-by:
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Paulo Zanoni authored
We want to look at the mode that we're actually going to set. All the other display checks for interlaced flags also look at adjusted_mode. Cc: Lyude <cpaul@redhat.com> Signed-off-by:
Lyude <cpaul@redhat.com> Link: http://patchwork.freedesktop.org/patch/msgid/1476131459-23763-2-git-send-email-paulo.r.zanoni@intel.com
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Paulo Zanoni authored
Mahesh Kumar is already working on a proper implementation for the workaround, but while we still don't have it, let's just unconditionally apply the workaround for everybody and we hope we can close all those numerous bugzilla tickets. Also, I'm not sure how easy it will be to backport the final implementation to the stable Kernels, and this patch here is probably easier to backport. At the present moment I still don't have confirmation that this patch fixes any of the bugs listed below, but we should definitely try testing all of them again. v2: s/intel_needs_memory_bw_wa/skl_needs_memory_bw_wa/ (Lyude). v3: Rebase (dev -> dev_priv change on ilk_wm_max_level). Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=94337 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=94605 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=94884 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=95010 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=96226 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=96828 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97450 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97830 Cc: stable@vger.kernel.org Cc: Mahesh Kumar <mahesh1.kumar@intel.com> Cc: Lyude <cpaul@redhat.com> Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com> Signed-off-by:
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Anusha Srivatsa authored
i915.enable_guc_loading/submission=2 forces the usage of GuC. For platforms that do not have a GuC, asking the kernel to use a GuC should not result in an error state. Do extra checks to see if the platform even has a GuC or not, regardless of the kernel parameter. v2: Based on Rodrigo's patch and Paulo's suggestion(Paulo, Rodrigo) v3: Correct the Indentation(Jani, Paulo) v4: Added the blank line(Jani, Paulo) v5 (from Paulo): Remove the extra blank line. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97573 Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Cc: Zanoni Paulo <paulo.r.zanoni@intel.com> Cc: Jani Nikula <jani.nikula@linux.intel.com> Reviewed-by:
Anusha Srivatsa <anusha.srivatsa@intel.com> Signed-off-by:
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Shashank Sharma authored
As per the software design, we are driving lspcon in PCON mode. But while resuming from suspend, lspcon can go in LS mode (which is its default operating mode on power on) This patch adds a resume function for lspcon, which makes sure its operating in PCON mode, post resume. V2: Address review comments from Imre - move lspcon_resume call to encoder->reset() - use early returns Signed-off-by:
Shashank Sharma <shashank.sharma@intel.com> Reviewed-by:
Imre Deak <imre.deak@intel.com> Acked-by:
Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by:
Jani Nikula <jani.nikula@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1476455212-27893-6-git-send-email-shashank.sharma@intel.com
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Shashank Sharma authored
This patch adds initialization code for lspcon. What we are doing here is: - Check if lspcon is configured in VBT for this port - If lspcon is configured, initialize it and configure it as DP port. V2: Addressed Ville's review comments: - Not adding AVI IF functions for LSPCON display now. This part will be added once the dig_port level AVI-IF series gets merged. V3: Rebase V4: Rebase V5: Rebase V6: Rebase Signed-off-by:Rodrigo Vivi <rodrigo.vivi@intel.com> Acked-by:
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Shashank Sharma authored
Many GEN9 boards come with on-board lspcon cards. Fot these boards, VBT configuration should properly point out if a particular port contains lspcon device, so that driver can initialize it properly. This patch adds a utility function, which checks the VBT flag for lspcon bit, and tells us if a port is configured to have a lspcon device or not. V2: Fixed review comments from Ville - Do not forget PORT_D while checking lspcon for GEN9 V3: Addressed review comments from Rodrigo - Create a HAS_LSPCON() macro for better use case handling. - Do not dump warnings for non-gen-9 platforms, it will be noise. V4: Rebase V5: Rebase V6: Pass dev_priv to HAS_LSPCON() macro Signed-off-by:
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Shashank Sharma authored
This patch adds a new file, to accommodate lspcon support for I915 driver. These functions probe, detect, initialize and configure an on-board lspcon device during the driver init time. Also, this patch adds a small structure for lspcon device, which will provide the runtime status of the device. V2: addressed ville's review comments - Clean the leftover macros from previous patch set V3: Rebase V4: addressed ville's review comments - make internal functions static - remove lspcon_detect_identifier, make it inline with lspcon_probe - remove is_lspcon_active function - remove force check while setting a lspcon mode V5: Rebase V6: Pass dev_priv to IS_GEN9 check Signed-off-by:
Akashdeep Sharma <akashdeep.sharma@intel.com> Reviewed-by:
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Shashank Sharma authored
This patch adds lspcon support in dp_dual_mode helper. lspcon is essentially a dp->hdmi dongle with dual personality. LS mode: It works as a passive dongle, by level shifting DP++ signals to HDMI signals, in LS mode. PCON mode: It works as a protocol converter active dongle in pcon mode, by converting DP++ outputs to HDMI 2.0 outputs. This patch adds support for lspcon detection and mode set switch operations, as a dp dual mode dongle. v2: Addressed review comments from Ville - add adaptor id for lspcon devices (0x08), use it to identify lspcon - change function names old: drm_lspcon_get_current_mode/drm_lspcon_change_mode new: drm_lspcon_get_mode/drm_lspcon_set_mode - change drm_lspcon_get_mode type to int, to match drm_dp_dual_mode_get_tmds_output - change 'err' to 'ret' to match the rest of the functions - remove pointless typecasting during call to dual_mode_read - fix the but while setting value of data, while writing lspcon mode - fix indentation - change mdelay(10) -> msleep(10) - return ETIMEDOUT instead of EFAULT, when lspcon mode change times out - Add an empty line to separate std regs macros and lspcon regs macros Indent bit definition v3: Addressed review comments from Rodrigo - change macro name from DP_DUAL_MODE_TYPE_LSPCON to DP_DUAL_MODE_TYPE_HAS_DPCD for better readability - change macro name from DP_DUAL_MODE_LSPCON_MODE_PCON to DP_DUAL_MODE_LSPCON_MODE_PCON for better readability - add comment for MCA specific offsets like 0x40 and 0x41 - remove DP_DUAL_MODE_REV_TYPE2 check while checking lspcon adapter id v4: Addressed review comments from Ville - Fixed indentation at few places - s/current_mode/mode - s/reqd_mode/mode - remove unnecessary void* cast - remove drm_edid.h from includes - Add a comment for _HAS_DPCD - Fix enum description, for lspcon_mode. v5: Rebase v6: Rebase Signed-off-by:
Dave Airlie <airlied@gmail.com> Acked-by:
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Zhenyu Wang authored
Change GVT-g code reference for intel_engine_cs from static array to allocated pointer after commit 3b3f1650 ("drm/i915: Allocate intel_engine_cs structure only for the enabled engines"). Signed-off-by:
Zhenyu Wang <zhenyuw@linux.intel.com> Signed-off-by:
Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/20161018014007.29369-1-zhenyuw@linux.intel.com
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- 17 Oct, 2016 4 commits
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Ville Syrjälä authored
DP link retraining causes (spurious?) underruns. We can't really avoid them, except perhaps by doing a full modeset (which has its own underrun suppression anyway). So let's just hide them. MST still has its own logic for retrainin, but a bigger hpd handling cleanup/unification is needed there anyway, so let's leave that be for now. References: https://bugs.freedesktop.org/show_bug.cgi?id=98251Signed-off-by:
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Ville Syrjälä authored
Extract the code to determine which PCH transcoder we're using to a small helper. Signed-off-by:
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Ville Syrjälä authored
GMBUS is part of the display engine, and thus has no need for forcewake. Let's not bother trying to grab it then. I don't recall if the display engine suffers from system hangs due to multiple accesses to the same "cacheline" in mmio space. I hope not since we're no longer protected by the uncore lock since commit 4e6c2d58 ("drm/i915: Take forcewake once for the entire GMBUS transaction") Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: David Weinehall <david.weinehall@linux.intel.com> Signed-off-by:
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https://github.com/01org/gvt-linuxDaniel Vetter authored
Zhenyu Wang writes: This is first pull request to merge GVT-g device model in i915 which contains core GVT-g device model work to virtualize GPU resources. This tries to add feature of Intel GVT-g technology for full GPU virtualization. This version will support KVM based virtualization solution named as KVMGT. More background is on official project home: https://01.org/igvt-gSigned-off-by:
Daniel Vetter <daniel.vetter@intel.com>
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- 16 Oct, 2016 4 commits
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Lyude authored
This function is a wreck, let's help it get its life back together and cleanup all of the copy pasta here. Signed-off-by:
Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Reviewed-by:
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Lyude authored
Having skl_wm_level contain all of the watermarks for each plane is annoying since it prevents us from having any sort of object to represent a single watermark level, something we take advantage of in the next commit to cut down on all of the copy paste code in here. Changes since v1: - Style nitpicks - Fix accidental usage of i vs. PLANE_CURSOR - Split out skl_pipe_wm_active_state simplification into separate patch Signed-off-by:
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Lyude authored
Next part of cleaning up the watermark code for skl. This is easy, since it seems that we never actually needed to keep track of the linetime in the skl_wm_values struct anyway. Signed-off-by:
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Lyude authored
First part of cleaning up all of the skl watermark code. This moves the structures for storing the ddb allocations of each pipe into intel_crtc_state, along with moving the structures for storing the current ddb allocations active on hardware into intel_crtc. Changes since v1: - Don't replace alloc->start = alloc->end = 0; Signed-off-by:
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- 14 Oct, 2016 17 commits
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Tvrtko Ursulin authored
I have re-ordered some struct members in patch: commit 44a655ca Author: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Date: Thu Oct 13 11:09:23 2016 +0100 drm/i915: Shrink cxsr_latency_table but that particular one is not initialized with named initializers which broke it. Move the bitfields back at the beginning. Space saving is still there. Signed-off-by:
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Michał Winiarski authored
Since "Dynamic page table allocations" were introduced, our page tables can grow (being dynamically allocated) with address space range usage. Unfortunately, their lifetime is bound to vm. This is not a huge problem when we're not using softpin - drm_mm is creating an upper bound on used range by causing addresses for our VMAs to eventually be reused. With softpin, long lived contexts can drain the system out of memory even with a single "small" object. For example: bo = bo_alloc(size); while(true) offset += size; exec(bo, offset); Will cause us to create new allocations until all memory in the system is used for tracking GPU pages (even though almost all PTEs in this vm are pointing to scratch). Let's free unused page tables in clear_range to prevent this - if no entries are used, we can safely free it and return this information to the caller (so that higher-level entry is pointing to scratch). v2: Document return value and free semantics (Joonas) v3: No newlines in vars block (Joonas) v4: Drop redundant local 'reduce' variable v5: Handle CI fail with enable_ppgtt=2 Cc: Michel Thierry <michel.thierry@intel.com> Cc: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by:Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Signed-off-by:
Michał Winiarski <michal.winiarski@intel.com> Signed-off-by:
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Michał Winiarski authored
Let's use more top-down approach, where each gen8_ppgtt_clear_* function is responsible for clearing the struct passed as an argument and calling relevant clear_range functions on lower-level tables. Doing this rather than operating on PTE ranges makes the implementation of shrinking page tables quite simple. v2: Drop min when calculating num_entries, no negation in 48b ppgtt check, no newlines in vars block (Joonas) Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Michel Thierry <michel.thierry@intel.com> Cc: Mika Kuoppala <mika.kuoppala@intel.com> Signed-off-by:
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Michał Winiarski authored
We never used any invalid ptes, those were put in place for a possibility of doing gpu faults. However our batchbuffers are not restricted in length, so everything needs to be pointing to something and thus out-of-bounds is pointing to scratch. Remove the valid flag as it is always true. v2: Expand commit msg, patch reorder (Mika) Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Michel Thierry <michel.thierry@intel.com> Reviewed-by:
Mika Kuoppala <mika.kuoppala@intel.com> Signed-off-by:
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Imre Deak authored
Currently the display INIT power domain disabling/enabling happens in a mismatched way in the suspend/resume_early hooks respectively. This can leave display power wells incorrectly disabled in the resume hook if the suspend sequence is aborted for some reason resulting in the suspend/resume hooks getting called but the suspend_late/resume_early hooks being skipped. In particular this change fixes "Unclaimed read from register 0x1e1204" on BYT/BSW triggered from i915_drm_resume()-> intel_pps_unlock_regs_wa() when suspending with /sys/power/pm_test set to devices. Fixes: 85e90679 ("drm/i915: disable power wells on suspend") Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: David Weinehall <david.weinehall@intel.com> Signed-off-by:
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Tvrtko Ursulin authored
Saves 1416 bytes of .rodata strings. v2: Add parantheses around dev_priv. (Ville Syrjala) Signed-off-by:
David Weinehall <david.weinehall@linux.intel.com> Acked-by:
Jani Nikula <jani.nikula@linux.intel.com> Acked-by:
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Tvrtko Ursulin authored
Saves 968 bytes of .rodata strings. v2: Add parantheses around dev_priv. (Ville Syrjala) v3: Rebase. Signed-off-by:
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Tvrtko Ursulin authored
Saves 944 bytes of .rodata strings and 128 bytes of .text. v2: Add parantheses around dev_priv. (Ville Syrjala) Signed-off-by:
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Tvrtko Ursulin authored
Saves 864 bytes of .rodata strings and ~100 of .text. v2: Add parantheses around dev_priv. (Ville Syrjala) v3: Rebase. Signed-off-by:
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Tvrtko Ursulin authored
Saves 472 bytes of .rodata strings. v2: Add parantheses around dev_priv. (Ville Syrjala) Signed-off-by:
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Tvrtko Ursulin authored
Saves 472 bytes of .rodata strings. v2: Add parantheses around dev_priv. (Ville Syrjala) Signed-off-by:
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Tvrtko Ursulin authored
Saves 1392 bytes of .rodata strings. Also change a few function/macro prototypes in i915_gem_gtt.c from dev to dev_priv where it made more sense to do so. v2: Add parantheses around dev_priv. (Ville Syrjala) v3: Mention function prototype changes. (David Weinehall) Signed-off-by:
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Tvrtko Ursulin authored
Saves 1016 bytes of .rodata strings and couple hundred of .text. v2: Add parantheses around dev_priv. (Ville Syrjala) Signed-off-by:
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Tvrtko Ursulin authored
Saves 1320 bytes of .rodata strings. v2: Add parantheses around dev_priv. (Ville Syrjala) Signed-off-by:
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Tvrtko Ursulin authored
Saves 2432 bytes of .rodata strings. v2: Add parantheses around dev_priv. (Ville Syrjala) Signed-off-by:
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Tvrtko Ursulin authored
Saves 1808 bytes of .rodata strings. v2: Add parantheses around dev_priv. (Ville Syrjala) Signed-off-by:
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Tvrtko Ursulin authored
Saves 848 bytes of .rodata strings. v2: Add parantheses around dev_priv. (Ville Syrjala) v3: Rebase. Signed-off-by:
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