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Patch "drm/radeon: Fix deadlock on runtime suspend" has been added to the 4.15-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled drm/radeon: Fix deadlock on runtime suspend to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: drm-radeon-fix-deadlock-on-runtime-suspend.patch and it can be found in the queue-4.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From 15734feff2bdac24aa3266c437cffa42851990e3 Mon Sep 17 00:00:00 2001 From: Lukas Wunner <lukas(a)wunner.de> Date: Sun, 11 Feb 2018 10:38:28 +0100 Subject: drm/radeon: Fix deadlock on runtime suspend From: Lukas Wunner <lukas(a)wunner.de> commit 15734feff2bdac24aa3266c437cffa42851990e3 upstream. radeon's ->runtime_suspend hook calls drm_kms_helper_poll_disable(), which waits for the output poll worker to finish if it's running. The output poll worker meanwhile calls pm_runtime_get_sync() in radeon's ->detect hooks, which waits for the ongoing suspend to finish, causing a deadlock. Fix by not acquiring a runtime PM ref if the ->detect hooks are called in the output poll worker's context. This is safe because the poll worker is only enabled while runtime active and we know that ->runtime_suspend waits for it to finish. Stack trace for posterity: INFO: task kworker/0:3:31847 blocked for more than 120 seconds Workqueue: events output_poll_execute [drm_kms_helper] Call Trace: schedule+0x3c/0x90 rpm_resume+0x1e2/0x690 __pm_runtime_resume+0x3f/0x60 radeon_lvds_detect+0x39/0xf0 [radeon] output_poll_execute+0xda/0x1e0 [drm_kms_helper] process_one_work+0x14b/0x440 worker_thread+0x48/0x4a0 INFO: task kworker/2:0:10493 blocked for more than 120 seconds. Workqueue: pm pm_runtime_work Call Trace: schedule+0x3c/0x90 schedule_timeout+0x1b3/0x240 wait_for_common+0xc2/0x180 wait_for_completion+0x1d/0x20 flush_work+0xfc/0x1a0 __cancel_work_timer+0xa5/0x1d0 cancel_delayed_work_sync+0x13/0x20 drm_kms_helper_poll_disable+0x1f/0x30 [drm_kms_helper] radeon_pmops_runtime_suspend+0x3d/0xa0 [radeon] pci_pm_runtime_suspend+0x61/0x1a0 vga_switcheroo_runtime_suspend+0x21/0x70 __rpm_callback+0x32/0x70 rpm_callback+0x24/0x80 rpm_suspend+0x12b/0x640 pm_runtime_work+0x6f/0xb0 process_one_work+0x14b/0x440 worker_thread+0x48/0x4a0 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=94147 Fixes: 10ebc0bc0934 ("drm/radeon: add runtime PM support (v2)") Cc: stable(a)vger.kernel.org # v3.13+: 27d4ee03078a: workqueue: Allow retrieval of current task's work struct Cc: stable(a)vger.kernel.org # v3.13+: 25c058ccaf2e: drm: Allow determining if current task is output poll worker Cc: Ismo Toijala <ismo.toijala(a)gmail.com> Cc: Alex Deucher <alexander.deucher(a)amd.com> Cc: Dave Airlie <airlied(a)redhat.com> Reviewed-by: Lyude Paul <lyude(a)redhat.com> Signed-off-by: Lukas Wunner <lukas(a)wunner.de> Link: https://patchwork.freedesktop.org/patch/msgid/64ea02c44f91dda19bc563902b97b… Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/gpu/drm/radeon/radeon_connectors.c | 74 +++++++++++++++++++---------- 1 file changed, 49 insertions(+), 25 deletions(-) --- a/drivers/gpu/drm/radeon/radeon_connectors.c +++ b/drivers/gpu/drm/radeon/radeon_connectors.c @@ -900,9 +900,11 @@ radeon_lvds_detect(struct drm_connector enum drm_connector_status ret = connector_status_disconnected; int r; - r = pm_runtime_get_sync(connector->dev->dev); - if (r < 0) - return connector_status_disconnected; + if (!drm_kms_helper_is_poll_worker()) { + r = pm_runtime_get_sync(connector->dev->dev); + if (r < 0) + return connector_status_disconnected; + } if (encoder) { struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); @@ -925,8 +927,12 @@ radeon_lvds_detect(struct drm_connector /* check acpi lid status ??? */ radeon_connector_update_scratch_regs(connector, ret); - pm_runtime_mark_last_busy(connector->dev->dev); - pm_runtime_put_autosuspend(connector->dev->dev); + + if (!drm_kms_helper_is_poll_worker()) { + pm_runtime_mark_last_busy(connector->dev->dev); + pm_runtime_put_autosuspend(connector->dev->dev); + } + return ret; } @@ -1040,9 +1046,11 @@ radeon_vga_detect(struct drm_connector * enum drm_connector_status ret = connector_status_disconnected; int r; - r = pm_runtime_get_sync(connector->dev->dev); - if (r < 0) - return connector_status_disconnected; + if (!drm_kms_helper_is_poll_worker()) { + r = pm_runtime_get_sync(connector->dev->dev); + if (r < 0) + return connector_status_disconnected; + } encoder = radeon_best_single_encoder(connector); if (!encoder) @@ -1109,8 +1117,10 @@ radeon_vga_detect(struct drm_connector * radeon_connector_update_scratch_regs(connector, ret); out: - pm_runtime_mark_last_busy(connector->dev->dev); - pm_runtime_put_autosuspend(connector->dev->dev); + if (!drm_kms_helper_is_poll_worker()) { + pm_runtime_mark_last_busy(connector->dev->dev); + pm_runtime_put_autosuspend(connector->dev->dev); + } return ret; } @@ -1174,9 +1184,11 @@ radeon_tv_detect(struct drm_connector *c if (!radeon_connector->dac_load_detect) return ret; - r = pm_runtime_get_sync(connector->dev->dev); - if (r < 0) - return connector_status_disconnected; + if (!drm_kms_helper_is_poll_worker()) { + r = pm_runtime_get_sync(connector->dev->dev); + if (r < 0) + return connector_status_disconnected; + } encoder = radeon_best_single_encoder(connector); if (!encoder) @@ -1188,8 +1200,12 @@ radeon_tv_detect(struct drm_connector *c if (ret == connector_status_connected) ret = radeon_connector_analog_encoder_conflict_solve(connector, encoder, ret, false); radeon_connector_update_scratch_regs(connector, ret); - pm_runtime_mark_last_busy(connector->dev->dev); - pm_runtime_put_autosuspend(connector->dev->dev); + + if (!drm_kms_helper_is_poll_worker()) { + pm_runtime_mark_last_busy(connector->dev->dev); + pm_runtime_put_autosuspend(connector->dev->dev); + } + return ret; } @@ -1252,9 +1268,11 @@ radeon_dvi_detect(struct drm_connector * enum drm_connector_status ret = connector_status_disconnected; bool dret = false, broken_edid = false; - r = pm_runtime_get_sync(connector->dev->dev); - if (r < 0) - return connector_status_disconnected; + if (!drm_kms_helper_is_poll_worker()) { + r = pm_runtime_get_sync(connector->dev->dev); + if (r < 0) + return connector_status_disconnected; + } if (radeon_connector->detected_hpd_without_ddc) { force = true; @@ -1437,8 +1455,10 @@ out: } exit: - pm_runtime_mark_last_busy(connector->dev->dev); - pm_runtime_put_autosuspend(connector->dev->dev); + if (!drm_kms_helper_is_poll_worker()) { + pm_runtime_mark_last_busy(connector->dev->dev); + pm_runtime_put_autosuspend(connector->dev->dev); + } return ret; } @@ -1689,9 +1709,11 @@ radeon_dp_detect(struct drm_connector *c if (radeon_dig_connector->is_mst) return connector_status_disconnected; - r = pm_runtime_get_sync(connector->dev->dev); - if (r < 0) - return connector_status_disconnected; + if (!drm_kms_helper_is_poll_worker()) { + r = pm_runtime_get_sync(connector->dev->dev); + if (r < 0) + return connector_status_disconnected; + } if (!force && radeon_check_hpd_status_unchanged(connector)) { ret = connector->status; @@ -1778,8 +1800,10 @@ radeon_dp_detect(struct drm_connector *c } out: - pm_runtime_mark_last_busy(connector->dev->dev); - pm_runtime_put_autosuspend(connector->dev->dev); + if (!drm_kms_helper_is_poll_worker()) { + pm_runtime_mark_last_busy(connector->dev->dev); + pm_runtime_put_autosuspend(connector->dev->dev); + } return ret; } Patches currently in stable-queue which might be from lukas(a)wunner.de are queue-4.15/workqueue-allow-retrieval-of-current-task-s-work-struct.patch queue-4.15/drm-radeon-fix-deadlock-on-runtime-suspend.patch queue-4.15/drm-amdgpu-fix-deadlock-on-runtime-suspend.patch queue-4.15/drm-allow-determining-if-current-task-is-output-poll-worker.patch queue-4.15/drm-nouveau-fix-deadlock-on-runtime-suspend.patch

7 years, 7 months

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Patch "drm/nouveau: prefer XBGR2101010 for addfb ioctl" has been added to the 4.15-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled drm/nouveau: prefer XBGR2101010 for addfb ioctl to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: drm-nouveau-prefer-xbgr2101010-for-addfb-ioctl.patch and it can be found in the queue-4.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From c20bb155c2c5acb775f68be5d84fe679687c3c1e Mon Sep 17 00:00:00 2001 From: Ilia Mirkin <imirkin(a)alum.mit.edu> Date: Sat, 3 Feb 2018 14:11:23 -0500 Subject: drm/nouveau: prefer XBGR2101010 for addfb ioctl From: Ilia Mirkin <imirkin(a)alum.mit.edu> commit c20bb155c2c5acb775f68be5d84fe679687c3c1e upstream. Nouveau only exposes support for XBGR2101010. Prior to the atomic conversion, drm would pass in the wrong format in the framebuffer, but it was always ignored -- both userspace (xf86-video-nouveau) and the kernel driver agreed on the layout, so the fact that the format was wrong didn't matter. With the atomic conversion, nouveau all of a sudden started caring about the exact format, and so the previously-working code in xf86-video-nouveau no longer functioned since the (internally-assigned) format from the addfb ioctl was wrong. This change adds infrastructure to allow a drm driver to specify that it prefers the XBGR format variant for the addfb ioctl, and makes nouveau's nv50 display driver set it. (Prior gens had no support for 30bpp at all.) Signed-off-by: Ilia Mirkin <imirkin(a)alum.mit.edu> Cc: stable(a)vger.kernel.org # v4.10+ Acked-by: Ben Skeggs <bskeggs(a)redhat.com> Signed-off-by: Daniel Vetter <daniel.vetter(a)ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20180203191123.31507-1-imirki… Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/gpu/drm/drm_framebuffer.c | 4 ++++ drivers/gpu/drm/nouveau/nv50_display.c | 1 + include/drm/drm_drv.h | 1 + 3 files changed, 6 insertions(+) --- a/drivers/gpu/drm/drm_framebuffer.c +++ b/drivers/gpu/drm/drm_framebuffer.c @@ -118,6 +118,10 @@ int drm_mode_addfb(struct drm_device *de r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth); r.handles[0] = or->handle; + if (r.pixel_format == DRM_FORMAT_XRGB2101010 && + dev->driver->driver_features & DRIVER_PREFER_XBGR_30BPP) + r.pixel_format = DRM_FORMAT_XBGR2101010; + ret = drm_mode_addfb2(dev, &r, file_priv); if (ret) return ret; --- a/drivers/gpu/drm/nouveau/nv50_display.c +++ b/drivers/gpu/drm/nouveau/nv50_display.c @@ -4426,6 +4426,7 @@ nv50_display_create(struct drm_device *d nouveau_display(dev)->fini = nv50_display_fini; disp->disp = &nouveau_display(dev)->disp; dev->mode_config.funcs = &nv50_disp_func; + dev->driver->driver_features |= DRIVER_PREFER_XBGR_30BPP; if (nouveau_atomic) dev->driver->driver_features |= DRIVER_ATOMIC; --- a/include/drm/drm_drv.h +++ b/include/drm/drm_drv.h @@ -55,6 +55,7 @@ struct drm_mode_create_dumb; #define DRIVER_ATOMIC 0x10000 #define DRIVER_KMS_LEGACY_CONTEXT 0x20000 #define DRIVER_SYNCOBJ 0x40000 +#define DRIVER_PREFER_XBGR_30BPP 0x80000 /** * struct drm_driver - DRM driver structure Patches currently in stable-queue which might be from imirkin(a)alum.mit.edu are queue-4.15/drm-nouveau-prefer-xbgr2101010-for-addfb-ioctl.patch

7 years, 7 months

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Patch "drm/nouveau: Fix deadlock on runtime suspend" has been added to the 4.15-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled drm/nouveau: Fix deadlock on runtime suspend to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: drm-nouveau-fix-deadlock-on-runtime-suspend.patch and it can be found in the queue-4.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From d61a5c1063515e855bedb1b81e20e50b0ac3541e Mon Sep 17 00:00:00 2001 From: Lukas Wunner <lukas(a)wunner.de> Date: Sun, 11 Feb 2018 10:38:28 +0100 Subject: drm/nouveau: Fix deadlock on runtime suspend From: Lukas Wunner <lukas(a)wunner.de> commit d61a5c1063515e855bedb1b81e20e50b0ac3541e upstream. nouveau's ->runtime_suspend hook calls drm_kms_helper_poll_disable(), which waits for the output poll worker to finish if it's running. The output poll worker meanwhile calls pm_runtime_get_sync() in nouveau_connector_detect() which waits for the ongoing suspend to finish, causing a deadlock. Fix by not acquiring a runtime PM ref if nouveau_connector_detect() is called in the output poll worker's context. This is safe because the poll worker is only enabled while runtime active and we know that ->runtime_suspend waits for it to finish. Other contexts calling nouveau_connector_detect() do require a runtime PM ref, these comprise: status_store() drm sysfs interface ->fill_modes drm callback drm_fb_helper_probe_connector_modes() drm_mode_getconnector() nouveau_connector_hotplug() nouveau_display_hpd_work() nv17_tv_set_property() Stack trace for posterity: INFO: task kworker/0:1:58 blocked for more than 120 seconds. Workqueue: events output_poll_execute [drm_kms_helper] Call Trace: schedule+0x28/0x80 rpm_resume+0x107/0x6e0 __pm_runtime_resume+0x47/0x70 nouveau_connector_detect+0x7e/0x4a0 [nouveau] nouveau_connector_detect_lvds+0x132/0x180 [nouveau] drm_helper_probe_detect_ctx+0x85/0xd0 [drm_kms_helper] output_poll_execute+0x11e/0x1c0 [drm_kms_helper] process_one_work+0x184/0x380 worker_thread+0x2e/0x390 INFO: task kworker/0:2:252 blocked for more than 120 seconds. Workqueue: pm pm_runtime_work Call Trace: schedule+0x28/0x80 schedule_timeout+0x1e3/0x370 wait_for_completion+0x123/0x190 flush_work+0x142/0x1c0 nouveau_pmops_runtime_suspend+0x7e/0xd0 [nouveau] pci_pm_runtime_suspend+0x5c/0x180 vga_switcheroo_runtime_suspend+0x1e/0xa0 __rpm_callback+0xc1/0x200 rpm_callback+0x1f/0x70 rpm_suspend+0x13c/0x640 pm_runtime_work+0x6e/0x90 process_one_work+0x184/0x380 worker_thread+0x2e/0x390 Bugzilla: https://bugs.archlinux.org/task/53497 Bugzilla: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=870523 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=70388#c33 Fixes: 5addcf0a5f0f ("nouveau: add runtime PM support (v0.9)") Cc: stable(a)vger.kernel.org # v3.12+: 27d4ee03078a: workqueue: Allow retrieval of current task's work struct Cc: stable(a)vger.kernel.org # v3.12+: 25c058ccaf2e: drm: Allow determining if current task is output poll worker Cc: Ben Skeggs <bskeggs(a)redhat.com> Cc: Dave Airlie <airlied(a)redhat.com> Reviewed-by: Lyude Paul <lyude(a)redhat.com> Signed-off-by: Lukas Wunner <lukas(a)wunner.de> Link: https://patchwork.freedesktop.org/patch/msgid/b7d2cbb609a80f59ccabfdf479b9d… Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/gpu/drm/nouveau/nouveau_connector.c | 18 +++++++++++++----- 1 file changed, 13 insertions(+), 5 deletions(-) --- a/drivers/gpu/drm/nouveau/nouveau_connector.c +++ b/drivers/gpu/drm/nouveau/nouveau_connector.c @@ -570,9 +570,15 @@ nouveau_connector_detect(struct drm_conn nv_connector->edid = NULL; } - ret = pm_runtime_get_sync(connector->dev->dev); - if (ret < 0 && ret != -EACCES) - return conn_status; + /* Outputs are only polled while runtime active, so acquiring a + * runtime PM ref here is unnecessary (and would deadlock upon + * runtime suspend because it waits for polling to finish). + */ + if (!drm_kms_helper_is_poll_worker()) { + ret = pm_runtime_get_sync(connector->dev->dev); + if (ret < 0 && ret != -EACCES) + return conn_status; + } nv_encoder = nouveau_connector_ddc_detect(connector); if (nv_encoder && (i2c = nv_encoder->i2c) != NULL) { @@ -647,8 +653,10 @@ detect_analog: out: - pm_runtime_mark_last_busy(connector->dev->dev); - pm_runtime_put_autosuspend(connector->dev->dev); + if (!drm_kms_helper_is_poll_worker()) { + pm_runtime_mark_last_busy(connector->dev->dev); + pm_runtime_put_autosuspend(connector->dev->dev); + } return conn_status; } Patches currently in stable-queue which might be from lukas(a)wunner.de are queue-4.15/workqueue-allow-retrieval-of-current-task-s-work-struct.patch queue-4.15/drm-radeon-fix-deadlock-on-runtime-suspend.patch queue-4.15/drm-amdgpu-fix-deadlock-on-runtime-suspend.patch queue-4.15/drm-allow-determining-if-current-task-is-output-poll-worker.patch queue-4.15/drm-nouveau-fix-deadlock-on-runtime-suspend.patch

7 years, 7 months

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Patch "drm/i915: Update watermark state correctly in sanitize_watermarks" has been added to the 4.15-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled drm/i915: Update watermark state correctly in sanitize_watermarks to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: drm-i915-update-watermark-state-correctly-in-sanitize_watermarks.patch and it can be found in the queue-4.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From 556fe36d09da5f82879e92bafa0371b4b79f7d6f Mon Sep 17 00:00:00 2001 From: Maarten Lankhorst <maarten.lankhorst(a)linux.intel.com> Date: Fri, 10 Nov 2017 12:34:53 +0100 Subject: drm/i915: Update watermark state correctly in sanitize_watermarks MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Maarten Lankhorst <maarten.lankhorst(a)linux.intel.com> commit 556fe36d09da5f82879e92bafa0371b4b79f7d6f upstream. We no longer use intel_crtc->wm.active for watermarks any more, which was incorrect. But this uncovered a bug in sanitize_watermarks(), which meant that we wrote the correct watermarks, but the next update would still use the wrong hw watermarks for calculating. This caused all further updates to fail with -EINVAL and the log would reveal an error like the one below: [ 10.043902] [drm:ilk_validate_wm_level.part.8 [i915]] Sprite WM0 too large 56 (max 0) [ 10.043960] [drm:ilk_validate_pipe_wm [i915]] LP0 watermark invalid [ 10.044030] [drm:intel_crtc_atomic_check [i915]] No valid intermediate pipe watermarks are possible Signed-off-by: Maarten Lankhorst <maarten.lankhorst(a)linux.intel.com> Fixes: b6b178a77210 ("drm/i915: Calculate ironlake intermediate watermarks correctly, v2.") Cc: stable(a)vger.kernel.org #v4.8+ Link: https://patchwork.freedesktop.org/patch/msgid/20171110113503.16253-1-maarte… Signed-off-by: Maarten Lankhorst <maarten.lankhorst(a)linux.intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala(a)linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/gpu/drm/i915/intel_display.c | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -14463,6 +14463,8 @@ retry: cs->wm.need_postvbl_update = true; dev_priv->display.optimize_watermarks(intel_state, cs); + + to_intel_crtc_state(crtc->state)->wm = cs->wm; } put_state: Patches currently in stable-queue which might be from maarten.lankhorst(a)linux.intel.com are queue-4.15/drm-i915-update-watermark-state-correctly-in-sanitize_watermarks.patch queue-4.15/drm-i915-always-call-to-intel_display_set_init_power-in-resume_early.patch

7 years, 7 months

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Patch "drm/i915: Try EDID bitbanging on HDMI after failed read" has been added to the 4.15-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled drm/i915: Try EDID bitbanging on HDMI after failed read to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: drm-i915-try-edid-bitbanging-on-hdmi-after-failed-read.patch and it can be found in the queue-4.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From 90024a5951029685acc5396258f1b0de9b23cf4a Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Stefan=20Br=C3=BCns?= <stefan.bruens(a)rwth-aachen.de> Date: Sun, 31 Dec 2017 23:34:54 +0100 Subject: drm/i915: Try EDID bitbanging on HDMI after failed read MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Stefan Brüns <stefan.bruens(a)rwth-aachen.de> commit 90024a5951029685acc5396258f1b0de9b23cf4a upstream. The ACK/NACK implementation as found in e.g. the G965 has the falling clock edge and the release of the data line after the ACK for the received byte happen at the same time. This is conformant with the I2C specification, which allows a zero hold time, see footnote [3]: "A device must internally provide a hold time of at least 300 ns for the SDA signal (with respect to the V IH(min) of the SCL signal) to bridge the undefined region of the falling edge of SCL." Some HDMI-to-VGA converters apparently fail to adhere to this requirement and latch SDA at the falling clock edge, so instead of an ACK sometimes a NACK is read and the slave (i.e. the EDID ROM) ends the transfer. The bitbanging releases the data line for the ACK only 1/4 bit time after the falling clock edge, so a slave will see the correct value no matter if it samples at the rising or the falling clock edge or in the center. Fallback to bitbanging is already done for the CRT connector. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=92685 Signed-off-by: Stefan Brüns <stefan.bruens(a)rwth-aachen.de> Cc: stable(a)vger.kernel.org Signed-off-by: Daniel Vetter <daniel.vetter(a)ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/a39f080b-81a5-4c93-b3f7-7cb0a… (cherry picked from commit cfb926e148e99acc02351d72e8b85e32b5f786ef) Signed-off-by: Rodrigo Vivi <rodrigo.vivi(a)intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/gpu/drm/i915/intel_hdmi.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) --- a/drivers/gpu/drm/i915/intel_hdmi.c +++ b/drivers/gpu/drm/i915/intel_hdmi.c @@ -1573,12 +1573,20 @@ intel_hdmi_set_edid(struct drm_connector struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector); struct edid *edid; bool connected = false; + struct i2c_adapter *i2c; intel_display_power_get(dev_priv, POWER_DOMAIN_GMBUS); - edid = drm_get_edid(connector, - intel_gmbus_get_adapter(dev_priv, - intel_hdmi->ddc_bus)); + i2c = intel_gmbus_get_adapter(dev_priv, intel_hdmi->ddc_bus); + + edid = drm_get_edid(connector, i2c); + + if (!edid && !intel_gmbus_is_forced_bit(i2c)) { + DRM_DEBUG_KMS("HDMI GMBUS EDID read failed, retry using GPIO bit-banging\n"); + intel_gmbus_force_bit(i2c, true); + edid = drm_get_edid(connector, i2c); + intel_gmbus_force_bit(i2c, false); + } intel_hdmi_dp_dual_mode_detect(connector, edid != NULL); Patches currently in stable-queue which might be from stefan.bruens(a)rwth-aachen.de are queue-4.15/drm-i915-try-edid-bitbanging-on-hdmi-after-failed-read.patch

7 years, 7 months

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Patch "drm/i915/perf: fix perf stream opening lock" has been added to the 4.15-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled drm/i915/perf: fix perf stream opening lock to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: drm-i915-perf-fix-perf-stream-opening-lock.patch and it can be found in the queue-4.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From f616f2830c1ed79245cfeca900f7e8a3b3c08c06 Mon Sep 17 00:00:00 2001 From: Lionel Landwerlin <lionel.g.landwerlin(a)intel.com> Date: Thu, 1 Mar 2018 11:06:13 +0000 Subject: drm/i915/perf: fix perf stream opening lock From: Lionel Landwerlin <lionel.g.landwerlin(a)intel.com> commit f616f2830c1ed79245cfeca900f7e8a3b3c08c06 upstream. We're seeing on CI that some contexts don't have the programmed OA period timer that directs the OA unit on how often to write reports. The issue is that we're not holding the drm lock from when we edit the context images down to when we set the exclusive_stream variable. This leaves a window for the deferred context allocation to call i915_oa_init_reg_state() that will not program the expected OA timer value, because we haven't set the exclusive_stream yet. v2: Drop need_lock from gen8_configure_all_contexts() (Matt) Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin(a)intel.com> Reviewed-by: Matthew Auld <matthew.auld(a)intel.com> Reviewed-by: Chris Wilson <chris(a)chris-wilson.co.uk> Fixes: 701f8231a2f ("drm/i915/perf: prune OA configs") Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=102254 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=103715 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=103755 Link: https://patchwork.freedesktop.org/patch/msgid/20180301110613.1737-1-lionel.… Cc: Jani Nikula <jani.nikula(a)linux.intel.com> Cc: Joonas Lahtinen <joonas.lahtinen(a)linux.intel.com> Cc: Rodrigo Vivi <rodrigo.vivi(a)intel.com> Cc: intel-gfx(a)lists.freedesktop.org Cc: <stable(a)vger.kernel.org> # v4.14+ (cherry picked from commit 41d3fdcd15d5ecf29cc73e8b79c2327ebb54b960) Signed-off-by: Rodrigo Vivi <rodrigo.vivi(a)intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/gpu/drm/i915/i915_perf.c | 38 ++++++++++++-------------------------- 1 file changed, 12 insertions(+), 26 deletions(-) --- a/drivers/gpu/drm/i915/i915_perf.c +++ b/drivers/gpu/drm/i915/i915_perf.c @@ -1301,9 +1301,8 @@ static void i915_oa_stream_destroy(struc */ mutex_lock(&dev_priv->drm.struct_mutex); dev_priv->perf.oa.exclusive_stream = NULL; - mutex_unlock(&dev_priv->drm.struct_mutex); - dev_priv->perf.oa.ops.disable_metric_set(dev_priv); + mutex_unlock(&dev_priv->drm.struct_mutex); free_oa_buffer(dev_priv); @@ -1755,22 +1754,13 @@ static int gen8_switch_to_updated_kernel * Note: it's only the RCS/Render context that has any OA state. */ static int gen8_configure_all_contexts(struct drm_i915_private *dev_priv, - const struct i915_oa_config *oa_config, - bool interruptible) + const struct i915_oa_config *oa_config) { struct i915_gem_context *ctx; int ret; unsigned int wait_flags = I915_WAIT_LOCKED; - if (interruptible) { - ret = i915_mutex_lock_interruptible(&dev_priv->drm); - if (ret) - return ret; - - wait_flags |= I915_WAIT_INTERRUPTIBLE; - } else { - mutex_lock(&dev_priv->drm.struct_mutex); - } + lockdep_assert_held(&dev_priv->drm.struct_mutex); /* Switch away from any user context. */ ret = gen8_switch_to_updated_kernel_context(dev_priv, oa_config); @@ -1818,8 +1808,6 @@ static int gen8_configure_all_contexts(s } out: - mutex_unlock(&dev_priv->drm.struct_mutex); - return ret; } @@ -1862,7 +1850,7 @@ static int gen8_enable_metric_set(struct * to make sure all slices/subslices are ON before writing to NOA * registers. */ - ret = gen8_configure_all_contexts(dev_priv, oa_config, true); + ret = gen8_configure_all_contexts(dev_priv, oa_config); if (ret) return ret; @@ -1877,7 +1865,7 @@ static int gen8_enable_metric_set(struct static void gen8_disable_metric_set(struct drm_i915_private *dev_priv) { /* Reset all contexts' slices/subslices configurations. */ - gen8_configure_all_contexts(dev_priv, NULL, false); + gen8_configure_all_contexts(dev_priv, NULL); I915_WRITE(GDT_CHICKEN_BITS, (I915_READ(GDT_CHICKEN_BITS) & ~GT_NOA_ENABLE)); @@ -2127,6 +2115,10 @@ static int i915_oa_stream_init(struct i9 if (ret) goto err_oa_buf_alloc; + ret = i915_mutex_lock_interruptible(&dev_priv->drm); + if (ret) + goto err_lock; + ret = dev_priv->perf.oa.ops.enable_metric_set(dev_priv, stream->oa_config); if (ret) @@ -2134,23 +2126,17 @@ static int i915_oa_stream_init(struct i9 stream->ops = &i915_oa_stream_ops; - /* Lock device for exclusive_stream access late because - * enable_metric_set() might lock as well on gen8+. - */ - ret = i915_mutex_lock_interruptible(&dev_priv->drm); - if (ret) - goto err_lock; - dev_priv->perf.oa.exclusive_stream = stream; mutex_unlock(&dev_priv->drm.struct_mutex); return 0; -err_lock: +err_enable: dev_priv->perf.oa.ops.disable_metric_set(dev_priv); + mutex_unlock(&dev_priv->drm.struct_mutex); -err_enable: +err_lock: free_oa_buffer(dev_priv); err_oa_buf_alloc: Patches currently in stable-queue which might be from lionel.g.landwerlin(a)intel.com are queue-4.15/drm-i915-perf-fix-perf-stream-opening-lock.patch

7 years, 7 months

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Patch "drm/i915: Fix rsvd2 mask when out-fence is returned" has been added to the 4.15-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled drm/i915: Fix rsvd2 mask when out-fence is returned to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: drm-i915-fix-rsvd2-mask-when-out-fence-is-returned.patch and it can be found in the queue-4.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From b1b13780ab06ef8c770dd9cbe31dac549a11630e Mon Sep 17 00:00:00 2001 From: Daniele Ceraolo Spurio <daniele.ceraolospurio(a)intel.com> Date: Wed, 14 Feb 2018 11:18:25 -0800 Subject: drm/i915: Fix rsvd2 mask when out-fence is returned From: Daniele Ceraolo Spurio <daniele.ceraolospurio(a)intel.com> commit b1b13780ab06ef8c770dd9cbe31dac549a11630e upstream. GENMASK_ULL wants the high bit of the mask first. The current value cancels the in-fence when an out-fence is returned. Fixes: fec0445caa273 ("drm/i915: Support explicit fencing for execbuf") Testcase: igt/gem_exec_fence/keep-in-fence* Cc: Chris Wilson <chris(a)chris-wilson.co.uk> Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio(a)intel.com> Reviewed-by: Chris Wilson <chris(a)chris-wilson.co.uk> Signed-off-by: Chris Wilson <chris(a)chris-wilson.co.uk> Link: https://patchwork.freedesktop.org/patch/msgid/20180214191827.8465-1-daniele… Cc: <stable(a)vger.kernel.org> # v4.12+ (cherry picked from commit b6a88e4a804cf5a71159906e16df2c1fc7196f92) Signed-off-by: Rodrigo Vivi <rodrigo.vivi(a)intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/gpu/drm/i915/i915_gem_execbuffer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c +++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c @@ -2419,7 +2419,7 @@ err_request: if (out_fence) { if (err == 0) { fd_install(out_fence_fd, out_fence->file); - args->rsvd2 &= GENMASK_ULL(0, 31); /* keep in-fence */ + args->rsvd2 &= GENMASK_ULL(31, 0); /* keep in-fence */ args->rsvd2 |= (u64)out_fence_fd << 32; out_fence_fd = -1; } else { Patches currently in stable-queue which might be from daniele.ceraolospurio(a)intel.com are queue-4.15/drm-i915-fix-rsvd2-mask-when-out-fence-is-returned.patch

7 years, 7 months

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Patch "drm/i915: Disable DC states around GMBUS on GLK" has been added to the 4.15-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled drm/i915: Disable DC states around GMBUS on GLK to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: drm-i915-disable-dc-states-around-gmbus-on-glk.patch and it can be found in the queue-4.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From 156961ae7bdf6feb72778e8da83d321b273343fd Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= <ville.syrjala(a)linux.intel.com> Date: Fri, 8 Dec 2017 23:37:36 +0200 Subject: drm/i915: Disable DC states around GMBUS on GLK MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Ville Syrjälä <ville.syrjala(a)linux.intel.com> commit 156961ae7bdf6feb72778e8da83d321b273343fd upstream. Prevent the DMC from destroying GMBUS transfers on GLK. GMBUS lives in PG1 so DC off is all we need. Cc: stable(a)vger.kernel.org Signed-off-by: Ville Syrjälä <ville.syrjala(a)linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20171208213739.16388-1-ville.… Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan(a)intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/gpu/drm/i915/intel_runtime_pm.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/gpu/drm/i915/intel_runtime_pm.c +++ b/drivers/gpu/drm/i915/intel_runtime_pm.c @@ -1844,6 +1844,7 @@ void intel_display_power_put(struct drm_ CNL_DISPLAY_POWERWELL_2_POWER_DOMAINS | \ BIT_ULL(POWER_DOMAIN_MODESET) | \ BIT_ULL(POWER_DOMAIN_AUX_A) | \ + BIT_ULL(POWER_DOMAIN_GMBUS) | \ BIT_ULL(POWER_DOMAIN_INIT)) static const struct i915_power_well_ops i9xx_always_on_power_well_ops = { Patches currently in stable-queue which might be from ville.syrjala(a)linux.intel.com are queue-4.15/drm-i915-update-watermark-state-correctly-in-sanitize_watermarks.patch queue-4.15/drm-i915-disable-dc-states-around-gmbus-on-glk.patch

7 years, 7 months

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Patch "drm/i915: Clear the in-use marker on execbuf failure" has been added to the 4.15-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled drm/i915: Clear the in-use marker on execbuf failure to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: drm-i915-clear-the-in-use-marker-on-execbuf-failure.patch and it can be found in the queue-4.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From e659d14ed48096f87a678e7ebbdf286a817b4d0e Mon Sep 17 00:00:00 2001 From: Chris Wilson <chris(a)chris-wilson.co.uk> Date: Mon, 19 Feb 2018 14:01:44 +0000 Subject: drm/i915: Clear the in-use marker on execbuf failure From: Chris Wilson <chris(a)chris-wilson.co.uk> commit e659d14ed48096f87a678e7ebbdf286a817b4d0e upstream. If we fail to unbind the vma (due to a signal on an active buffer that needs to be moved for the next execbuf), then we need to clear the persistent tracking state we setup for this execbuf. Fixes: c7c6e46f913b ("drm/i915: Convert execbuf to use struct-of-array packing for critical fields") Testcase: igt/gem_fenced_exec_thrash/no-spare-fences-busy* Signed-off-by: Chris Wilson <chris(a)chris-wilson.co.uk> Cc: Tvrtko Ursulin <tvrtko.ursulin(a)intel.com> Cc: Joonas Lahtinen <joonas.lahtinen(a)linux.intel.com> Cc: <stable(a)vger.kernel.org> # v4.14+ Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin(a)intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180219140144.24004-1-chris@… (cherry picked from commit ed2f3532321083cf40e4da4e36234880e0136136) Signed-off-by: Rodrigo Vivi <rodrigo.vivi(a)intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/gpu/drm/i915/i915_gem_execbuffer.c | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c +++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c @@ -505,6 +505,8 @@ eb_add_vma(struct i915_execbuffer *eb, u list_add_tail(&vma->exec_link, &eb->unbound); if (drm_mm_node_allocated(&vma->node)) err = i915_vma_unbind(vma); + if (unlikely(err)) + vma->exec_flags = NULL; } return err; } Patches currently in stable-queue which might be from chris(a)chris-wilson.co.uk are queue-4.15/drm-i915-fix-rsvd2-mask-when-out-fence-is-returned.patch queue-4.15/drm-i915-perf-fix-perf-stream-opening-lock.patch queue-4.15/drm-i915-clear-the-in-use-marker-on-execbuf-failure.patch

7 years, 7 months

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Patch "drm/i915: Check for fused or unused pipes" has been added to the 4.15-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled drm/i915: Check for fused or unused pipes to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: drm-i915-check-for-fused-or-unused-pipes.patch and it can be found in the queue-4.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From 9965db26ac0548648309f506dc155a92daa2158f Mon Sep 17 00:00:00 2001 From: Mika Kahola <mika.kahola(a)intel.com> Date: Mon, 18 Dec 2017 10:04:03 +0200 Subject: drm/i915: Check for fused or unused pipes From: Mika Kahola <mika.kahola(a)intel.com> commit 9965db26ac0548648309f506dc155a92daa2158f upstream. We may have fused or unused pipes in our system. Let's check that the pipe in question is within limits of accessible pipes. In case, that we are not able to access the pipe, we return early with a warning. v2: Rephrasing of the commit message (Jani) Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=103206 Reported-by: Thomas Gleixner <tglx(a)linutronix.de> Tested-by: Jaswinder Singh Rajput <jaswinder(a)perfectintelligent.com> Suggested-by: Jani Nikula <jani.nikula(a)intel.com> Reviewed-by: Jani Nikula <jani.nikula(a)intel.com> Signed-off-by: Mika Kahola <mika.kahola(a)intel.com> Signed-off-by: Jani Nikula <jani.nikula(a)intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/1513584243-12607-1-git-send-e… (cherry picked from commit 0b7029b7e43fda1304c181a3ade0b429b9edcd9d) Signed-off-by: Rodrigo Vivi <rodrigo.vivi(a)intel.com> Cc: <stable(a)vger.kernel.org> # v4.10+ Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/gpu/drm/i915/intel_audio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/gpu/drm/i915/intel_audio.c +++ b/drivers/gpu/drm/i915/intel_audio.c @@ -754,7 +754,7 @@ static struct intel_encoder *get_saved_e { struct intel_encoder *encoder; - if (WARN_ON(pipe >= INTEL_INFO(dev_priv)->num_pipes)) + if (WARN_ON(pipe >= ARRAY_SIZE(dev_priv->av_enc_map))) return NULL; /* MST */ Patches currently in stable-queue which might be from mika.kahola(a)intel.com are queue-4.15/drm-i915-audio-fix-check-for-av_enc_map-overflow.patch queue-4.15/drm-i915-check-for-fused-or-unused-pipes.patch

7 years, 7 months

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