dri-devel May 2016

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1404 discussions

ubsan report on gfx_v8_0_get_cu_info
by Dave Airlie 03 May '16

03 May '16

While trying to track down some crashes on my Fiji I enabled UBSAN and got this, this led me to look at the function mentioned, and wow totally undefined code land. The code loops over num_shader_engines with i, then uses i * 16 in a calc for a left-shift. On Fiji at least num_shader_engines is 4, so clearly we are going to see shifts > 32 with that. The userspace ABI seems limited to a 32-bit value as well here, which to me seems to point out something stinks in either the UABI design or the calculations here. Dave. [ 733.803161] ================================================================================ [ 733.803169] UBSAN: Undefined behaviour in /home/airlied/devel/kernel/linux-2.6/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c:5188:29 [ 733.803172] shift exponent 32 is too large for 32-bit type 'unsigned int' [ 733.803176] CPU: 0 PID: 1787 Comm: Xorg Not tainted 4.6.0-rc6+ #94 [ 733.803178] Hardware name: Gigabyte Technology Co., Ltd. GA-A75M-UD2H/GA-A75M-UD2H, BIOS F6 09/28/2012 [ 733.803180] 0000000000000000 ffff880232753a78 ffffffff814628e5 0000000000000006 [ 733.803184] ffff880232753aa0 0000000000000003 ffff880232753a90 ffffffff814a5ce9 [ 733.803188] ffffffffa0390e5e ffff880232753b30 ffffffff814a6576 0000000000000202 [ 733.803191] Call Trace: [ 733.803198] [<ffffffff814628e5>] dump_stack+0x68/0x99 [ 733.803200] [<ffffffff814a5ce9>] ubsan_epilogue+0xd/0x3a [ 733.803203] [<ffffffff814a6576>] __ubsan_handle_shift_out_of_bounds+0x11f/0x148 [ 733.803207] [<ffffffff81003233>] ? syscall_trace_enter_phase2+0x240/0x3a9 [ 733.803210] [<ffffffff818b1cb1>] ? _raw_spin_unlock_irqrestore+0x3a/0x48 [ 733.803268] [<ffffffffa02bb9f2>] gfx_v8_0_get_cu_info+0x22b/0x2d1 [amdgpu] [ 733.803318] [<ffffffffa02bb9f2>] ? gfx_v8_0_get_cu_info+0x22b/0x2d1 [amdgpu] [ 733.803363] [<ffffffffa022357c>] amdgpu_info_ioctl+0xe91/0xf64 [amdgpu] [ 733.803405] [<ffffffffa0094442>] drm_ioctl+0x379/0x524 [drm] [ 733.803408] [<ffffffff815c88d3>] ? __pm_runtime_resume+0x84/0x91 [ 733.803452] [<ffffffffa02226eb>] ? amdgpu_debugfs_cleanup+0x6/0x6 [amdgpu] [ 733.803456] [<ffffffff810f234b>] ? trace_hardirqs_on_caller+0x1f8/0x227 [ 733.803458] [<ffffffff810f2387>] ? trace_hardirqs_on+0xd/0xf [ 733.803503] [<ffffffffa021e191>] amdgpu_drm_ioctl+0x99/0xe1 [amdgpu] [ 733.803506] [<ffffffff8127d3ab>] vfs_ioctl+0x5a/0x6f [ 733.803508] [<ffffffff8127dbcf>] do_vfs_ioctl+0x724/0x7bb [ 733.803511] [<ffffffff813d3b1a>] ? security_file_ioctl+0x43/0x57 [ 733.803514] [<ffffffff8128bdcd>] ? __fget_light+0xca/0x111 [ 733.803516] [<ffffffff8127dcb8>] SyS_ioctl+0x52/0x74 [ 733.803518] [<ffffffff810035f9>] do_syscall_64+0x85/0x12c [ 733.803521] [<ffffffff818b231a>] entry_SYSCALL64_slow_path+0x25/0x25 [ 733.803523] ============================================================================= ~ ~ ~

1 0

[Bug 93928] Tonga valley regression since drm/amdgpu: split VM mappings into smaller operations (v2)
by bugzilla-daemon＠freedesktop.org 02 May '16

02 May '16

https://bugs.freedesktop.org/show_bug.cgi?id=93928 Bug ID: 93928 Summary: Tonga valley regression since drm/amdgpu: split VM mappings into smaller operations (v2) Product: DRI Version: DRI git Hardware: x86-64 (AMD64) OS: Linux (All) Status: NEW Severity: normal Priority: medium Component: DRM/AMDgpu Assignee: dri-devel(a)lists.freedesktop.org Reporter: adf.lists(a)gmail.com R8285 agd5f drm-next-4.6-wip Since below Unigine Valley renders mostly a screen full of colored blocks. Doesn't affect desktop, Unreal Elemental or xonotic. In case settings are relevant I run valley ultra quality fullscreen 1920x1080 8xAA commit 8292e95e64134e8c81ccec25fb702f3c838c2a1e Author: Christian König <christian.koenig(a)amd.com> Date: Mon Jan 25 14:27:31 2016 +0100 drm/amdgpu: split VM mappings into smaller operations (v2) If we can't copy entries from the GTT or fill them with one command split up the mapping operation into multiple ones. v2: agd: rebase on upstream -- You are receiving this mail because: You are the assignee for the bug.

1 8

[Bug 95195] Tonga agd5f drm-next-4.7-wip UVD Oops/lock since drm/amdgpu: keep vm in job instead of ib
by bugzilla-daemon＠freedesktop.org 02 May '16

02 May '16

https://bugs.freedesktop.org/show_bug.cgi?id=95195 Bug ID: 95195 Summary: Tonga agd5f drm-next-4.7-wip UVD Oops/lock since drm/amdgpu: keep vm in job instead of ib Product: DRI Version: DRI git Hardware: x86-64 (AMD64) OS: Linux (All) Status: NEW Severity: normal Priority: medium Component: DRM/AMDgpu Assignee: dri-devel(a)lists.freedesktop.org Reporter: adf.lists(a)gmail.com Created attachment 123327 --> https://bugs.freedesktop.org/attachment.cgi?id=123327&action=edit dmesg showing Oops Tonga on agd5f drm-next-4.7-wip Getting an Oops followed by a GPU lock using UVD since - commit 5599239c331b9860c35d5e0fd7c6acbc838fc20d Author: Monk Liu <Monk.Liu(a)amd.com> Date: Tue Apr 19 20:11:32 2016 +0800 drm/amdgpu: keep vm in job instead of ib ib.vm is a legacy way to get vm, after scheduler implemented vm should be get from job, and all ibs from one job share the same vm, no need to keep ib.vm just move vm field to job. this patch as well add job as paramter to ib_schedule so it can get vm from job->vm. Easy to provoke with powerplay=1 and auto clocks. Harder to provoke, but also happens with powerplay=0. dmesg with Oops attached. -- You are receiving this mail because: You are the assignee for the bug.

1 3

[Bug 83461] New: hdmi screen flicker/unusable
by bugzilla-daemon＠bugzilla.kernel.org 02 May '16

02 May '16

https://bugzilla.kernel.org/show_bug.cgi?id=83461 Bug ID: 83461 Summary: hdmi screen flicker/unusable Product: Drivers Version: 2.5 Kernel Version: 3.15, 3.16 Hardware: x86-64 OS: Linux Tree: Mainline Status: NEW Severity: blocking Priority: P1 Component: Video(DRI - non Intel) Assignee: drivers_video-dri(a)kernel-bugs.osdl.org Reporter: kb(a)spatium.org Regression: No Since kernel 3.15 I cannot get a stable video output on HDMI. The screen flickers and blinks, and my dmesg is full of these: sound hdaudioC1D0: HDMI ATI/AMD: no speaker allocation for ELD The video card in question is: Advanced Micro Devices, Inc. [AMD/ATI] RS880 [Radeon HD 4200] Downgrading to 3.14 seems to remove the issue. -- You are receiving this mail because: You are watching the assignee of the bug.

1 38

[Bug 27314] displayport link training fails on certain panels (channel equalization fails)
by bugzilla-daemon＠freedesktop.org 02 May '16

02 May '16

https://bugs.freedesktop.org/show_bug.cgi?id=27314 --- Comment #73 from nickles1995(a)gmail.com --- I believe I have this issue. The screen turns off after grub. Hardware: 27 inch imac, late 2009 radeon hd 4850 core i7 I'm trying to put the latest fedora 23 on it. I'm not overwhelmingly sure about the details beyond that. I'm relatively new to linux, so if anyone wants me to try anything it would take a bit of hand holding. -- You are receiving this mail because: You are the assignee for the bug.

1 0

[PATCH 00/12] De-stage Sync File Framework
by Gustavo Padovan 02 May '16

02 May '16

From: Gustavo Padovan <gustavo.padovan(a)collabora.co.uk> Hi, This patchset sits on top of Sync ABI Rework v13: https://www.spinics.net/lists/dri-devel/msg105667.html The first eight clean up and prepare sync_file for de-staging. The last four patches do the de-staging, moving files to drivers/dma-buf/ and include/linux/ plus adding Documentation. As the de-stage depends upon many changes on the staging tree it would be good to get all the patches merged through the staging tree if Sumit agrees with that. The next step on the Sync de-stage is clean up the remaining bits of the Sync Framework, mainly SW_SYNC, which is only used for testing. Thanks, Gustavo --- Gustavo Padovan (12): staging/android: remove redundant comments on sync_merge_data staging/android: drop sync_file_install() and sync_file_put() staging/android: move sync_file functions comments to sync.c staging/android: make sync_file_merge() static staging/android: make sync_file_fdget() static staging/android: prepare sync_file for de-staging staging/android: improve documentation for sync_file staging/android: style fix: alignment to match the open parenthesis dma-buf/sync_file: de-stage sync_file headers dma-buf/sync_file: de-stage sync_file Documentation: include sync_file into DocBook Documentation: add Sync File doc Documentation/DocBook/device-drivers.tmpl | 2 + Documentation/dma-buf-sync_file.txt | 65 +++++ drivers/Kconfig | 2 + drivers/dma-buf/Kconfig | 11 + drivers/dma-buf/Makefile | 1 + drivers/dma-buf/sync_file.c | 394 ++++++++++++++++++++++++++++++ drivers/staging/android/Kconfig | 1 + drivers/staging/android/sync.c | 362 --------------------------- drivers/staging/android/sync.h | 91 +------ drivers/staging/android/sync_debug.c | 5 +- drivers/staging/android/uapi/sync.h | 100 -------- include/linux/sync_file.h | 57 +++++ include/uapi/linux/sync_file.h | 100 ++++++++ 13 files changed, 638 insertions(+), 553 deletions(-) create mode 100644 Documentation/dma-buf-sync_file.txt create mode 100644 drivers/dma-buf/Kconfig create mode 100644 drivers/dma-buf/sync_file.c delete mode 100644 drivers/staging/android/uapi/sync.h create mode 100644 include/linux/sync_file.h create mode 100644 include/uapi/linux/sync_file.h -- 2.5.5

3 18

Warning in gpu/drm/i915/intel_display.c
by Dmitry Katsubo 02 May '16

02 May '16

Dear all, I have noticed several warnings in dmesg like below. I wonder if I can provide more information. I have looked into the sources https://kernel.googlesource.com/pub/scm/linux/kernel/git/stable/linux-stabl… https://kernel.googlesource.com/pub/scm/linux/kernel/git/stable/linux-stabl… but it does not bring me the idea what to do to make it happy. In general everything works, but few times I have observed system freeze with some pixel trash printed on the screen. Thanks for any feedback. # fbset mode "1920x1080" geometry 1920 1080 1920 1080 32 timings 0 0 0 0 0 0 0 accel true rgba 8/16,8/8,8/0,0/0 endmode # dmesg [Wed Apr 27 05:37:17 2016] Linux agpgart interface v0.103 [Wed Apr 27 05:37:17 2016] agpgart-intel 0000:00:00.0: Intel 945GM Chipset [Wed Apr 27 05:37:17 2016] agpgart-intel 0000:00:00.0: detected gtt size: 262144K total, 262144K mappable [Wed Apr 27 05:37:17 2016] agpgart-intel 0000:00:00.0: detected 8192K stolen memory [Wed Apr 27 05:37:17 2016] agpgart-intel 0000:00:00.0: AGP aperture is 256M @ 0xd0000000 [[Wed Apr 27 05:37:24 2016] [drm] Initialized drm 1.1.0 20060810 [Wed Apr 27 05:37:24 2016] intel_rng: FWH not detected [Wed Apr 27 05:37:24 2016] [drm] Memory usable by graphics device = 256M [Wed Apr 27 05:37:24 2016] checking generic (d0000000 500000) vs hw (d0000000 10000000) [Wed Apr 27 05:37:24 2016] fb: switching to inteldrmfb from simple [Wed Apr 27 05:37:24 2016] Console: switching to colour dummy device 80x25 [Wed Apr 27 05:37:24 2016] [drm] Replacing VGA console driver [Wed Apr 27 05:37:24 2016] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013). [Wed Apr 27 05:37:24 2016] [drm] Driver supports precise vblank timestamp query. [Wed Apr 27 05:37:24 2016] vgaarb: device changed decodes: PCI:0000:00:02.0,olddecodes=io+mem,decodes=io+mem:owns=io+mem [Wed Apr 27 05:37:24 2016] [drm] initialized overlay support [Wed Apr 27 05:37:24 2016] ------------[ cut here ]------------ [Wed Apr 27 05:37:24 2016] WARNING: CPU: 1 PID: 111 at /build/linux-SBJFwR/linux-4.4.6/debian/build/source_rt/drivers/gpu/drm/i915/intel_display.c:12157 intel_atomic_check+0xb57/0x1010 [i915]() [Wed Apr 27 05:37:24 2016] WARN_ON(!connector_state->crtc) [Wed Apr 27 05:37:24 2016] Modules linked in: [Wed Apr 27 05:37:24 2016] iTCO_wdt iTCO_vendor_support evdev ppdev coretemp sr9700 ath5k(+) ath pcspkr serio_raw dm9601 usbnet mac80211 mii snd_hda_codec_realtek snd_hda_codec_generic i2c_i801(+) cfg80211 rfkill snd_hda_intel lpc_ich mfd_core snd_hda_codec snd_hda_core sg i915(+) snd_hwdep snd_pcm_oss snd_mixer_oss rng_core snd_pcm snd_timer 8250_fintek snd video soundcore drm_kms_helper drm parport_pc acpi_cpufreq parport i2c_algo_bit shpchp tpm_tis tpm button processor binfmt_misc w83627hf hwmon_vid autofs4 xfs libcrc32c crc32c_generic btrfs xor raid6_pq uas usb_storage sr_mod cdrom sd_mod ata_generic ata_piix libata uhci_hcd ehci_pci firewire_ohci scsi_mod ehci_hcd firewire_core crc_itu_t usbcore usb_common e1000e ptp pps_core [Wed Apr 27 05:37:24 2016] CPU: 1 PID: 111 Comm: kworker/u4:3 Not tainted 4.4.0-1-rt-686-pae #1 Debian 4.4.6-1 [Wed Apr 27 05:37:24 2016] Hardware name: AOpen i945GMx-IF/i945GMx-IF, BIOS i945GMx-IF R1.01 Mar.02.2007 AOpen Inc. 03/02/2007 [Wed Apr 27 05:37:24 2016] Workqueue: events_unbound async_run_entry_fn [Wed Apr 27 05:37:24 2016] 00000286 233d0db0 f6ac7b54 c12d2393 f6ac7b64 f8c134c0 c106e53d f8c216fb [Wed Apr 27 05:37:24 2016] f6ac7b84 0000006f f8c134c0 00002f7d f8bb5387 00000009 f8bb5387 f28eca00 [Wed Apr 27 05:37:24 2016] 00000000 f30d9800 f6ac7b70 c106e5ae 00000009 f6ac7b64 f8c216fb f6ac7b84 [Wed Apr 27 05:37:24 2016] Call Trace: [Wed Apr 27 05:37:24 2016] [<c12d2393>] ? dump_stack+0x55/0x72 [Wed Apr 27 05:37:24 2016] [<c106e53d>] ? warn_slowpath_common+0x8d/0xc0 [Wed Apr 27 05:37:24 2016] [<f8bb5387>] ? intel_atomic_check+0xb57/0x1010 [i915] [Wed Apr 27 05:37:24 2016] [<f8bb5387>] ? intel_atomic_check+0xb57/0x1010 [i915] [Wed Apr 27 05:37:24 2016] [<c106e5ae>] ? warn_slowpath_fmt+0x3e/0x60 [Wed Apr 27 05:37:24 2016] [<f8bb5387>] ? intel_atomic_check+0xb57/0x1010 [i915] [Wed Apr 27 05:37:24 2016] [<f8bb4830>] ? intel_link_compute_m_n+0x60/0x60 [i915] [Wed Apr 27 05:37:24 2016] [<f8acf109>] ? drm_atomic_check_only+0x1a9/0x610 [drm] [Wed Apr 27 05:37:24 2016] [<f8ace659>] ? drm_atomic_set_crtc_for_plane+0x69/0x100 [drm] [Wed Apr 27 05:37:24 2016] [<f8acf658>] ? drm_atomic_set_fb_for_plane+0x28/0xa0 [drm] [Wed Apr 27 05:37:24 2016] [<f8acf586>] ? drm_atomic_commit+0x16/0x60 [drm] [Wed Apr 27 05:37:24 2016] [<f8bb8c67>] ? intel_get_load_detect_pipe+0x417/0x5f0 [i915] [Wed Apr 27 05:37:24 2016] [<c11b72cc>] ? ___slab_alloc.constprop.75+0xac/0x6e0 [Wed Apr 27 05:37:24 2016] [<f8bf33ca>] ? intel_tv_detect+0x10a/0x620 [i915] [Wed Apr 27 05:37:24 2016] [<c11b5f01>] ? __slab_free+0x2d1/0x3b0 [Wed Apr 27 05:37:24 2016] [<f8a82d3b>] ? drm_helper_probe_single_connector_modes_merge_bits+0x20b/0x480 [drm_kms_helper] [Wed Apr 27 05:37:24 2016] [<f8a82fc7>] ? drm_helper_probe_single_connector_modes+0x17/0x20 [drm_kms_helper] [Wed Apr 27 05:37:24 2016] [<f8a8eb6a>] ? drm_fb_helper_initial_config+0x9a/0x400 [drm_kms_helper] [Wed Apr 27 05:37:24 2016] [<c10a94a3>] ? pick_next_task_fair+0x4d3/0x560 [Wed Apr 27 05:37:24 2016] [<c108dd0e>] ? async_run_entry_fn+0x4e/0x160 [Wed Apr 27 05:37:24 2016] [<c1091cda>] ? preempt_count_add+0x8a/0xb0 [Wed Apr 27 05:37:24 2016] [<c106edb3>] ? unpin_current_cpu+0x13/0x70 [Wed Apr 27 05:37:24 2016] [<c1086432>] ? process_one_work+0x112/0x410 [Wed Apr 27 05:37:24 2016] [<c106ec71>] ? pin_current_cpu+0x71/0x1a0 [Wed Apr 27 05:37:24 2016] [<c1086771>] ? worker_thread+0x41/0x490 [Wed Apr 27 05:37:24 2016] [<c1086730>] ? process_one_work+0x410/0x410 [Wed Apr 27 05:37:24 2016] [<c108b69c>] ? kthread+0x9c/0xb0 [Wed Apr 27 05:37:24 2016] [<c1563d49>] ? ret_from_kernel_thread+0x21/0x38 [Wed Apr 27 05:37:24 2016] [<c108b600>] ? kthread_worker_fn+0x130/0x130 [Wed Apr 27 05:37:24 2016] ---[ end trace 0000000000000002 ]--- [Wed Apr 27 05:37:25 2016] ------------[ cut here ]------------ [Wed Apr 27 05:37:25 2016] WARNING: CPU: 1 PID: 111 at /build/linux-SBJFwR/linux-4.4.6/debian/build/source_rt/drivers/gpu/drm/i915/intel_display.c:12734 intel_atomic_commit+0xbb8/0x1300 [i915]() [Wed Apr 27 05:37:25 2016] encoder's enabled state mismatch (expected 0, found 1) [Wed Apr 27 05:37:25 2016] Modules linked in: iTCO_wdt iTCO_vendor_support evdev ppdev coretemp sr9700 ath5k(+) ath pcspkr serio_raw dm9601 usbnet mac80211 mii snd_hda_codec_realtek snd_hda_codec_generic i2c_i801(+) cfg80211 rfkill snd_hda_intel lpc_ich mfd_core snd_hda_codec snd_hda_core sg i915(+) snd_hwdep snd_pcm_oss snd_mixer_oss rng_core snd_pcm snd_timer 8250_fintek snd video soundcore drm_kms_helper drm parport_pc acpi_cpufreq parport i2c_algo_bit shpchp tpm_tis tpm button processor binfmt_misc w83627hf hwmon_vid autofs4 xfs libcrc32c crc32c_generic btrfs xor raid6_pq uas usb_storage sr_mod cdrom sd_mod ata_generic ata_piix libata uhci_hcd ehci_pci firewire_ohci scsi_mod ehci_hcd firewire_core crc_itu_t usbcore usb_common e1000e ptp pps_core [Wed Apr 27 05:37:25 2016] CPU: 1 PID: 111 Comm: kworker/u4:3 Tainted: G W 4.4.0-1-rt-686-pae #1 Debian 4.4.6-1 [Wed Apr 27 05:37:25 2016] Hardware name: AOpen i945GMx-IF/i945GMx-IF, BIOS i945GMx-IF R1.01 Mar.02.2007 AOpen Inc. 03/02/2007 [Wed Apr 27 05:37:25 2016] Workqueue: events_unbound async_run_entry_fn [Wed Apr 27 05:37:25 2016] 00000286 233d0db0 f6ac7b50 c12d2393 f6ac7b60 f8c134c0 c106e53d f8c1629c [Wed Apr 27 05:37:25 2016] f6ac7b80 0000006f f8c134c0 000031be f8bb3588 00000009 f8bb3588 f6b74248 [Wed Apr 27 05:37:25 2016] f30c4400 f6b74254 f6ac7b6c c106e5ae 00000009 f6ac7b60 f8c1629c f6ac7b80 [Wed Apr 27 05:37:25 2016] Call Trace: [Wed Apr 27 05:37:25 2016] [<c12d2393>] ? dump_stack+0x55/0x72 [Wed Apr 27 05:37:25 2016] [<c106e53d>] ? warn_slowpath_common+0x8d/0xc0 [Wed Apr 27 05:37:25 2016] [<f8bb3588>] ? intel_atomic_commit+0xbb8/0x1300 [i915] [Wed Apr 27 05:37:25 2016] [<f8bb3588>] ? intel_atomic_commit+0xbb8/0x1300 [i915] [Wed Apr 27 05:37:25 2016] [<c106e5ae>] ? warn_slowpath_fmt+0x3e/0x60 [Wed Apr 27 05:37:25 2016] [<f8bb3588>] ? intel_atomic_commit+0xbb8/0x1300 [i915] [Wed Apr 27 05:37:25 2016] [<f8bb4830>] ? intel_link_compute_m_n+0x60/0x60 [i915] [Wed Apr 27 05:37:25 2016] [<f8acf109>] ? drm_atomic_check_only+0x1a9/0x610 [drm] [Wed Apr 27 05:37:25 2016] [<f8ace659>] ? drm_atomic_set_crtc_for_plane+0x69/0x100 [drm] [Wed Apr 27 05:37:25 2016] [<f8acf658>] ? drm_atomic_set_fb_for_plane+0x28/0xa0 [drm] [Wed Apr 27 05:37:25 2016] [<f8acf5a2>] ? drm_atomic_commit+0x32/0x60 [drm] [Wed Apr 27 05:37:25 2016] [<f8bb8c67>] ? intel_get_load_detect_pipe+0x417/0x5f0 [i915] [Wed Apr 27 05:37:25 2016] [<c11b72cc>] ? ___slab_alloc.constprop.75+0xac/0x6e0 [Wed Apr 27 05:37:25 2016] [<f8bf33ca>] ? intel_tv_detect+0x10a/0x620 [i915] [Wed Apr 27 05:37:25 2016] [<c11b5f01>] ? __slab_free+0x2d1/0x3b0 [Wed Apr 27 05:37:25 2016] [<f8a82d3b>] ? drm_helper_probe_single_connector_modes_merge_bits+0x20b/0x480 [drm_kms_helper] [Wed Apr 27 05:37:25 2016] [<f8a82fc7>] ? drm_helper_probe_single_connector_modes+0x17/0x20 [drm_kms_helper] [Wed Apr 27 05:37:25 2016] [<f8a8eb6a>] ? drm_fb_helper_initial_config+0x9a/0x400 [drm_kms_helper] [Wed Apr 27 05:37:25 2016] [<c10a94a3>] ? pick_next_task_fair+0x4d3/0x560 [Wed Apr 27 05:37:25 2016] [<c108dd0e>] ? async_run_entry_fn+0x4e/0x160 [Wed Apr 27 05:37:25 2016] [<c1091cda>] ? preempt_count_add+0x8a/0xb0 [Wed Apr 27 05:37:25 2016] [<c106edb3>] ? unpin_current_cpu+0x13/0x70 [Wed Apr 27 05:37:25 2016] [<c1086432>] ? process_one_work+0x112/0x410 [Wed Apr 27 05:37:25 2016] [<c106ec71>] ? pin_current_cpu+0x71/0x1a0 [Wed Apr 27 05:37:25 2016] [<c1086771>] ? worker_thread+0x41/0x490 [Wed Apr 27 05:37:25 2016] [<c1086730>] ? process_one_work+0x410/0x410 [Wed Apr 27 05:37:25 2016] [<c108b69c>] ? kthread+0x9c/0xb0 [Wed Apr 27 05:37:25 2016] [<c1563d49>] ? ret_from_kernel_thread+0x21/0x38 [Wed Apr 27 05:37:25 2016] [<c108b600>] ? kthread_worker_fn+0x130/0x130 [Wed Apr 27 05:37:25 2016] ---[ end trace 0000000000000003 ]--- [Wed Apr 27 05:37:25 2016] fbcon: inteldrmfb (fb0) is primary device [Wed Apr 27 05:37:25 2016] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device # lspci 00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller [8086:27a2] (rev 03) (prog-if 00 [VGA controller]) Subsystem: AOPEN Inc. Device [a0a0:0627] Flags: bus master, fast devsel, latency 0, IRQ 16 Memory at fde80000 (32-bit, non-prefetchable) [size=512K] I/O ports at ff00 [size=8] Memory at d0000000 (32-bit, prefetchable) [size=256M] Memory at fdf80000 (32-bit, non-prefetchable) [size=256K] Expansion ROM at <unassigned> [disabled] Capabilities: [90] MSI: Enable- Count=1/1 Maskable- 64bit- Capabilities: [d0] Power Management version 2 Kernel driver in use: i915 # uname -a Linux home 4.4.0-1-rt-686-pae #1 SMP PREEMPT RT Debian 4.4.6-1 (2016-03-17) i686 GNU/Linux -- With best regards, Dmitry

1 1

[PATCH] drm/i915: Fix enc_to_dig_port() for MST encoders
by Lyude 02 May '16

02 May '16

For MST encoders, the encoder struct is stored in the intel_dp_mst struct, not a intel_digital_port struct. This fixes issues with hotplugging MST displays that support MST audio, where hotplugging had a surprisingly good chance of accidentally overwriting other parts of the kernel leading to seemingly unrelated backtraces in sysfs, ext4, etc. Cc: stable(a)vger.kernel.org Signed-off-by: Lyude <cpaul(a)redhat.com> --- drivers/gpu/drm/i915/intel_drv.h | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 4c027d6..81f2212 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -918,18 +918,23 @@ intel_attached_encoder(struct drm_connector *connector) return to_intel_connector(connector)->encoder; } -static inline struct intel_digital_port * -enc_to_dig_port(struct drm_encoder *encoder) -{ - return container_of(encoder, struct intel_digital_port, base.base); -} - static inline struct intel_dp_mst_encoder * enc_to_mst(struct drm_encoder *encoder) { return container_of(encoder, struct intel_dp_mst_encoder, base.base); } +static inline struct intel_digital_port * +enc_to_dig_port(struct drm_encoder *encoder) +{ + if (encoder->encoder_type == DRM_MODE_ENCODER_DPMST) + return enc_to_mst(encoder)->primary; + else { + return container_of(encoder, struct intel_digital_port, + base.base); + } +} + static inline struct intel_dp *enc_to_intel_dp(struct drm_encoder *encoder) { return &enc_to_dig_port(encoder)->dp; -- 2.5.5

5 5

[RFC v2 0/8] drm: Add support for tiny LCD displays
by Noralf Trønnes 02 May '16

02 May '16

This is an attempt at providing a DRM version of drivers/staging/fbtft. I'm sending this early before cleaning up the code hoping to get some feedback in case there are better ways to structure this. The tinydrm module provides a very simplified view of DRM for displays that has onboard video memory and is connected through a slow bus like SPI/I2C. A driver using tinydrm has to provide a function that will be called from the dirtyfb ioctl (or fbdev deferred io) and optional drm_panel functions which can be used to set up the display controller and control backlight. Display controllers that have a similar register interface as the MIPI DBI/DCS controllers can use the lcdreg module for register access. Changes since RFC v1: - Add fb_deferred_io support to drm_fb_helper and drm_fb_cma_helper, and use drm_fb_cma_helper instead. - Move display pipeline code to drm_simple_kms_helper. - Don't use (struct drm_driver *)->load(). - Make tinydrm more like a library, exporting the internals. - Move the struct drm_driver definition from the tinydrm module to the driver using a helper macro: TINYDRM_DRM_DRIVER. - Remove dirtyfb() async code. - Added support for partial display updates. Noralf Trønnes (8): drm/fb-helper: Add fb_deferred_io support drm/fb-cma-helper: Add fb_deferred_io support drm: Add helper for simple kms drivers drm: Add DRM support for tiny LCD displays drm/tinydrm: Add lcd register abstraction drm/tinydrm/lcdreg: Add SPI support drm/tinydrm: Add mipi-dbi support drm/tinydrm: Add support for several Adafruit TFT displays drivers/gpu/drm/Kconfig | 9 + drivers/gpu/drm/Makefile | 2 + drivers/gpu/drm/drm_fb_cma_helper.c | 149 ++++- drivers/gpu/drm/drm_fb_helper.c | 189 +++++- drivers/gpu/drm/drm_simple_kms_helper.c | 262 ++++++++ drivers/gpu/drm/tinydrm/Kconfig | 25 + drivers/gpu/drm/tinydrm/Makefile | 8 + drivers/gpu/drm/tinydrm/adafruit-tft.c | 257 ++++++++ drivers/gpu/drm/tinydrm/core/Makefile | 6 + drivers/gpu/drm/tinydrm/core/tinydrm-core.c | 155 +++++ .../gpu/drm/tinydrm/core/tinydrm-display-pipe.c | 82 +++ drivers/gpu/drm/tinydrm/core/tinydrm-fbdev.c | 94 +++ drivers/gpu/drm/tinydrm/core/tinydrm-framebuffer.c | 99 +++ drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c | 95 +++ drivers/gpu/drm/tinydrm/lcdreg/Kconfig | 8 + drivers/gpu/drm/tinydrm/lcdreg/Makefile | 5 + drivers/gpu/drm/tinydrm/lcdreg/internal.h | 8 + drivers/gpu/drm/tinydrm/lcdreg/lcdreg-core.c | 190 ++++++ drivers/gpu/drm/tinydrm/lcdreg/lcdreg-debugfs.c | 281 ++++++++ drivers/gpu/drm/tinydrm/lcdreg/lcdreg-spi.c | 720 +++++++++++++++++++++ drivers/gpu/drm/tinydrm/mipi-dbi.c | 253 ++++++++ include/drm/drm_fb_cma_helper.h | 14 + include/drm/drm_fb_helper.h | 15 + include/drm/drm_simple_kms_helper.h | 44 ++ include/drm/tinydrm/ili9340.h | 47 ++ include/drm/tinydrm/lcdreg-spi.h | 63 ++ include/drm/tinydrm/lcdreg.h | 126 ++++ include/drm/tinydrm/mipi-dbi.h | 24 + include/drm/tinydrm/tinydrm.h | 143 ++++ 29 files changed, 3360 insertions(+), 13 deletions(-) create mode 100644 drivers/gpu/drm/drm_simple_kms_helper.c create mode 100644 drivers/gpu/drm/tinydrm/Kconfig create mode 100644 drivers/gpu/drm/tinydrm/Makefile create mode 100644 drivers/gpu/drm/tinydrm/adafruit-tft.c create mode 100644 drivers/gpu/drm/tinydrm/core/Makefile create mode 100644 drivers/gpu/drm/tinydrm/core/tinydrm-core.c create mode 100644 drivers/gpu/drm/tinydrm/core/tinydrm-display-pipe.c create mode 100644 drivers/gpu/drm/tinydrm/core/tinydrm-fbdev.c create mode 100644 drivers/gpu/drm/tinydrm/core/tinydrm-framebuffer.c create mode 100644 drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c create mode 100644 drivers/gpu/drm/tinydrm/lcdreg/Kconfig create mode 100644 drivers/gpu/drm/tinydrm/lcdreg/Makefile create mode 100644 drivers/gpu/drm/tinydrm/lcdreg/internal.h create mode 100644 drivers/gpu/drm/tinydrm/lcdreg/lcdreg-core.c create mode 100644 drivers/gpu/drm/tinydrm/lcdreg/lcdreg-debugfs.c create mode 100644 drivers/gpu/drm/tinydrm/lcdreg/lcdreg-spi.c create mode 100644 drivers/gpu/drm/tinydrm/mipi-dbi.c create mode 100644 include/drm/drm_simple_kms_helper.h create mode 100644 include/drm/tinydrm/ili9340.h create mode 100644 include/drm/tinydrm/lcdreg-spi.h create mode 100644 include/drm/tinydrm/lcdreg.h create mode 100644 include/drm/tinydrm/mipi-dbi.h create mode 100644 include/drm/tinydrm/tinydrm.h -- 2.2.2

3 20

Misc amdgpu patches
by Alex Deucher 02 May '16

02 May '16

This is just a bunch of patches that I've been carrying in my -wip tree for a while. Some are minor updates to previous versions I've sent out. - Fixes to non-DAL modesetting code for Polaris - Clockgating fixes and enablement - Misc powerplay bug fixes - Misc bug fixes and cleanups I meant to send these out last week, but time got away from me. Alex

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dri-devel May 2016