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2021-07-09drm/panel-simple: Add Samsung ATNA33XC20Rajeev Nandan
Add Samsung 13.3" FHD eDP AMOLED panel. Signed-off-by: Rajeev Nandan <rajeevny@codeaurora.org> Reviewed-by: Douglas Anderson <dianders@chromium.org> Signed-off-by: Douglas Anderson <dianders@chromium.org> Link: https://patchwork.freedesktop.org/patch/msgid/1624726268-14869-7-git-send-email-rajeevny@codeaurora.org
2021-07-09dt-bindings: display: simple: Add Samsung ATNA33XC20Rajeev Nandan
Add Samsung 13.3" FHD eDP AMOLED panel. Signed-off-by: Rajeev Nandan <rajeevny@codeaurora.org> Reviewed-by: Douglas Anderson <dianders@chromium.org> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Douglas Anderson <dianders@chromium.org> Link: https://patchwork.freedesktop.org/patch/msgid/1624726268-14869-6-git-send-email-rajeevny@codeaurora.org
2021-07-09drm/panel-simple: Update validation warnings for eDP panel descriptionRajeev Nandan
Do not give a warning for the eDP panels if the "bus_format" is not specified, since most eDP panels can support more than one bus formats and this can be auto-detected. Also, update the check to include bpc=10 for the eDP panel. Signed-off-by: Rajeev Nandan <rajeevny@codeaurora.org> Reviewed-by: Douglas Anderson <dianders@chromium.org> Signed-off-by: Douglas Anderson <dianders@chromium.org> Link: https://patchwork.freedesktop.org/patch/msgid/1624726268-14869-5-git-send-email-rajeevny@codeaurora.org
2021-07-09drm/panel-simple: Support for delays between GPIO & regulatorRajeev Nandan
Some panels datasheets may specify a delay between the enable GPIO and the regulator. Support this in panel-simple. Signed-off-by: Rajeev Nandan <rajeevny@codeaurora.org> Reviewed-by: Douglas Anderson <dianders@chromium.org> Signed-off-by: Douglas Anderson <dianders@chromium.org> Link: https://patchwork.freedesktop.org/patch/msgid/1624726268-14869-4-git-send-email-rajeevny@codeaurora.org
2021-07-09drm/panel-simple: Support DP AUX backlightRajeev Nandan
If there is no backlight specified in the device tree and the panel has access to the DP AUX channel then create a DP AUX backlight if supported by the panel. Signed-off-by: Rajeev Nandan <rajeevny@codeaurora.org> Reviewed-by: Douglas Anderson <dianders@chromium.org> Signed-off-by: Douglas Anderson <dianders@chromium.org> Link: https://patchwork.freedesktop.org/patch/msgid/1624726268-14869-3-git-send-email-rajeevny@codeaurora.org
2021-07-09drm/panel: add basic DP AUX backlight supportRajeev Nandan
Some panels support backlight control over DP AUX channel using VESA's standard backlight control interface. Using new DRM eDP backlight helpers, add support to create and register a backlight for those panels in drm_panel to simplify the panel drivers. The panel driver with access to "struct drm_dp_aux" can create and register a backlight device using following code snippet in its probe() function: err = drm_panel_dp_aux_backlight(panel, aux); if (err) return err; Then drm_panel will handle backlight_(enable|disable) calls similar to the case when drm_panel_of_backlight() is used. Currently, we are not supporting one feature where the source device can combine the backlight brightness levels set through DP AUX and the BL_PWM_DIM eDP connector pin. Since it's not required for the basic backlight controls, it can be added later. Signed-off-by: Rajeev Nandan <rajeevny@codeaurora.org> Reviewed-by: Douglas Anderson <dianders@chromium.org> Reviewed-by: Lyude Paul <lyude@redhat.com> [dianders: added blank line for warning when applying] Signed-off-by: Douglas Anderson <dianders@chromium.org> Link: https://patchwork.freedesktop.org/patch/msgid/1624726268-14869-2-git-send-email-rajeevny@codeaurora.org
2021-07-09drm/msm: always wait for the exclusive fenceChristian König
Drivers also need to to sync to the exclusive fence when a shared one is present. Completely untested since the driver won't even compile on !ARM. Signed-off-by: Christian König <christian.koenig@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210702111642.17259-5-christian.koenig@amd.com Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2021-07-09drm/gma500: Fix end of loop tests for list_for_each_entryHarshvardhan Jha
The list_for_each_entry() iterator, "connector" in this code, can never be NULL. If we exit the loop without finding the correct connector then "connector" points invalid memory that is an offset from the list head. This will eventually lead to memory corruption and presumably a kernel crash. Fixes: 9bd81acdb648 ("gma500: Convert Oaktrail to work with new output handling") Signed-off-by: Harshvardhan Jha <harshvardhan.jha@oracle.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20210709073959.11443-1-harshvardhan.jha@oracle.com
2021-07-08drm/vkms: Create a debugfs file to get vkms config dataBeatriz Martins de Carvalho
Creating a vkms_config debugfs file in vkms_drv.c to get/track vkms config data, for the long-term plan of making vkms configurable and have multiple different instances. Reviewed-by: Melissa Wen <melissa.srw@gmail.com> Signed-off-by: Beatriz Martins de Carvalho <martinsdecarvalhobeatriz@gmail.com> Signed-off-by: Melissa Wen <melissa.srw@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210708092002.11847-1-martinsdecarvalhobeatriz@gmail.com
2021-07-08drm/nouveau: always wait for the exclusive fenceChristian König
Drivers also need to to sync to the exclusive fence when a shared one is present. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20210702111642.17259-4-christian.koenig@amd.com
2021-07-08dma-buf: fix dma_resv_test_signaled test_all handling v2Christian König
As the name implies if testing all fences is requested we should indeed test all fences and not skip the exclusive one because we see shared ones. v2: fix logic once more Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20210702111642.17259-3-christian.koenig@amd.com
2021-07-08drm/gud: Add async_flush module parameterNoralf Trønnes
Provide a way for userspace to choose synchronous flushing/pageflips. This helps save CPU and power. It is also useful for test scripts since userspace can know when a flush has happended and wait before doing the next visual test. Cc: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Reviewed-by: Peter Stuge <peter@stuge.se> Link: https://patchwork.freedesktop.org/patch/msgid/20210703141321.35494-2-noralf@tronnes.org
2021-07-08drm/gud: Add Raspberry Pi Pico IDNoralf Trønnes
Add VID/PID for the Raspberry Pi Pico implementation. Source: https://github.com/notro/gud-pico Cc: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Reviewed-by: Peter Stuge <peter@stuge.se> Link: https://patchwork.freedesktop.org/patch/msgid/20210703141321.35494-1-noralf@tronnes.org
2021-07-08drm/gud: Use scatter-gather USB bulk transferNoralf Trønnes
There'a limit to how big a kmalloc buffer can be, and as memory gets fragmented it becomes more difficult to get big buffers. The downside of smaller buffers is that the driver has to split the transfer up which hampers performance. Compression might also take a hit because of the splitting. Solve this by allocating the transfer buffer using vmalloc and create a SG table to be passed on to the USB subsystem. vmalloc_32() is used to avoid DMA bounce buffers on USB controllers that can only access 32-bit addresses. This also solves the problem that split transfers can give host side tearing since flushing is decoupled from rendering. usb_sg_wait() doesn't have timeout handling builtin, so it is wrapped in a timer like 4 out of 6 users in the kernel have done. v2: - Use DIV_ROUND_UP (Linus) - Add timeout note to the commit log (Linus) - Expand note about upper buffer limit (Linus) - Change var name s/timer/ctx/ in gud_usb_bulk_timeout() Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Link: https://patchwork.freedesktop.org/patch/msgid/20210701170748.58009-2-noralf@tronnes.org
2021-07-08drm/gud: Free buffers on device removalNoralf Trønnes
Free transfer and compression buffers on device removal instead of at DRM device removal time. This ensures that the usual 2x8MB buffers are released when the device is unplugged and not kept around should userspace keep the DRM device fd open. At least Ubuntu 20.04 doesn't release the DRM device on unplug. The damage_lock mutex is not destroyed because it is used outside the drm_dev_enter/exit block in gud_pipe_update(). AFAICT it's possible for an open fbdev descriptor to trigger a commit after the USB device is gone. v2: Don't destroy damage_lock Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Link: https://patchwork.freedesktop.org/patch/msgid/20210701170748.58009-1-noralf@tronnes.org
2021-07-08drm/hisilicon/hibmc: Convert to Linux IRQ interfacesThomas Zimmermann
Drop the DRM IRQ midlayer in favor of Linux IRQ interfaces. DRM's IRQ helpers are mostly useful for UMS drivers. Modern KMS drivers don't benefit from using it. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Tian Tao <tiantao6@hisilicon.com> Reviewed-by: Maxime Ripard <maxime@cerno.tech> Link: https://patchwork.freedesktop.org/patch/msgid/20210706075425.9257-1-tzimmermann@suse.de
2021-07-08drm/vmwgfx: Convert to Linux IRQ interfacesThomas Zimmermann
Drop the DRM IRQ midlayer in favor of Linux IRQ interfaces. DRM's IRQ helpers are mostly useful for UMS drivers. Modern KMS drivers don't benefit from using it. Vmwgfx already uses Linux IRQ functions. All that's left to replace is the reference to struct drm_device.irq. Use irq value of struct pci_dev instead. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Zack Rusin <zackr@vmware.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210706072253.6844-1-tzimmermann@suse.de
2021-07-08drm/arm/komeda: Don't include drm_irq.hThomas Zimmermann
The header file is not required. Don't include it. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Liviu Dudau <liviu.dudau@arm.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210706072712.7558-1-tzimmermann@suse.de
2021-07-08drm/meson: Convert to Linux IRQ interfacesThomas Zimmermann
Drop the DRM IRQ midlayer in favor of Linux IRQ interfaces. DRM's IRQ helpers are mostly useful for UMS drivers. Modern KMS drivers don't benefit from using it. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210706074545.8763-1-tzimmermann@suse.de
2021-07-08drm/qxl: Remove empty qxl_gem_prime_mmap()Thomas Zimmermann
The function qxl_gem_prime_mmap() returns an error. The two callers of gem_prime_mmap are drm_fbdev_fb_mmap() and drm_gem_dmabuf_mmap(), which both already handle NULL-callbacks with an error code. So clear gem_prime_mmap in qxl and remove qxl_gem_prime_mmap(). Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Gerd Hoffmann <kraxel@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210624090500.8320-1-tzimmermann@suse.de
2021-07-06drm/vkms: replace macro in vkms_release()Beatriz Martins de Carvalho
Replace macro in vkms_release() Signed-off-by: Beatriz Martins de Carvalho <martinsdecarvalhobeatriz@gmail.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20210706154510.224695-1-martinsdecarvalhobeatriz@gmail.com
2021-07-06drm: vc4: Fix pixel-wrap issue with DVP teardownTim Gover
Adjust the DVP enable/disable sequence to avoid a pixel getting stuck in an internal, non resettable FIFO within PixelValve when changing HDMI resolution. The blank pixels features of the DVP can prevent signals back to pixelvalve causing it to not clear the FIFO. Adjust the ordering and timing of operations to ensure the clear signal makes it through to pixelvalve. Signed-off-by: Tim Gover <tim.gover@raspberrypi.com> Signed-off-by: Maxime Ripard <maxime@cerno.tech> Link: https://patchwork.freedesktop.org/patch/msgid/20210628130533.144617-1-maxime@cerno.tech
2021-07-06drm/vc4: hdmi: Limit noise when deferring snd card registrationNicolas Saenz Julienne
We don't want to print an error message each time devm_snd_soc_register_card() returns -EPROBE_DEFER, the function will most likely succeed some time in the future, once the missing resources are available. So use dev_err_probe(), which will redirect the messages to the debug log level in such case. Signed-off-by: Nicolas Saenz Julienne <nsaenzju@redhat.com> Signed-off-by: Maxime Ripard <maxime@cerno.tech> Link: https://patchwork.freedesktop.org/patch/msgid/20210629121723.11523-1-nsaenzju@redhat.com
2021-07-06drm/vgem: Implement mmap as GEM object functionThomas Zimmermann
Moving the driver-specific mmap code into a GEM object function allows for using DRM helpers for various mmap callbacks. The respective vgem functions are being removed. The file_operations structure vgem_driver_fops is now being created by the helper macro DEFINE_DRM_GEM_FOPS(). Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Christian König <christian.koenig@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210624095238.8804-1-tzimmermann@suse.de
2021-07-05drm/mgag200: Constify LUT for programming bppThomas Zimmermann
Declare constant LUT for bpp programming as static const. Removes mutable data from device structure. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20210702075642.27834-5-tzimmermann@suse.de
2021-07-05drm/mgag200: Extract device type and flags in mgag200_pci_probe()Thomas Zimmermann
The type and flags values are stored in the PCI ID list. Extract them in the probe function. Makes the device initialization more readable. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20210702075642.27834-4-tzimmermann@suse.de
2021-07-05drm/mgag200: Inline mgag200_device_init()Thomas Zimmermann
Inline mgag200_device_init() into mgag200_device_create(), which is the only caller. Also remove a duplicate error message for mgag200_modeset_init(). The function will print an error if/where it failed. v2: * include a note about the removed error message in changelog (Sam) Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20210702075642.27834-3-tzimmermann@suse.de
2021-07-05drm/mgag200: Don't pass flags to drm_dev_register()Thomas Zimmermann
The flags argument is only relevant for UMS drivers. Pass 0. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20210702075642.27834-2-tzimmermann@suse.de
2021-07-05drm/vram-helper: Unexport drm_vram_helper_{alloc,release}_mm()Thomas Zimmermann
All GEM-VRAM-based drivers use auto-cleanup via drmm_vram_helper_init(). Unexport the manual APIs and make them internal implementation. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20210702075434.27677-4-tzimmermann@suse.de
2021-07-05drm/bochs: Use managed initialization for GEM VRAM helpersThomas Zimmermann
Convert to managed GEM VRAM initialization and switch bochs to full autocleanup. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20210702075434.27677-3-tzimmermann@suse.de
2021-07-05drm/bochs: Move to tiny/Thomas Zimmermann
The bochs driver is only ~600 lines of code. Putting it into tiny/ cleans up the DRM directory slightly. Some style problems were fixed and unneeded include statements were removed. No functional changes. v2: * make bochs_mode_funcs static (Daniel, kernel test robot) * rebase onto aperture API changes Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20210702075434.27677-2-tzimmermann@suse.de
2021-07-05drm/dbi: Print errors for mipi_dbi_command()Linus Walleij
The macro mipi_dbi_command() does not report errors unless you wrap it in another macro to do the error reporting. Report a rate-limited error so we know what is going on. After this any code wishing to send command arrays can rely on mipi_dbi_command() providing an appropriate error message if something goes wrong. Suggested-by: Noralf Trønnes <noralf@tronnes.org> Suggested-by: Douglas Anderson <dianders@chromium.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Noralf Trønnes <noralf@tronnes.org> Link: https://patchwork.freedesktop.org/patch/msgid/20210702135601.3952726-1-linus.walleij@linaro.org
2021-07-01drm/vkms: update the current status of todo listMelissa Wen
Update: - debugging issues on igt testcases - plane composition features: add primary plane improvements - suggestions of good tasks to start working on vkms Drop: - syzkaller bug report: what triggered the warning was replaced by shmem functions at https://patchwork.freedesktop.org/patch/394614/ - overlay plane: this feature was added by https://patchwork.freedesktop.org/patch/430941/ Signed-off-by: Melissa Wen <melissa.srw@gmail.com> Reviewed-by: Rodrigo Siqueira <rodrigosiqueiramelo@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210626092655.ghmmt2yux5klrne7@smtp.gmail.com
2021-07-01drm/aperture: Pass DRM driver structure instead of driver nameThomas Zimmermann
Print the name of the DRM driver when taking over fbdev devices. Makes the output to dmesg more consistent. Note that the driver name is only used for printing a string to the kernel log. No UAPI is affected by this change. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Nirmoy Das <nirmoy.das@amd.com> Acked-by: Chen-Yu Tsai <wens@csie.org> # sun4i Acked-by: Neil Armstrong <narmstrong@baylibre.com> # meson Link: https://patchwork.freedesktop.org/patch/msgid/20210629135833.22679-1-tzimmermann@suse.de
2021-07-01drm/panfrost: Increase the AS_ACTIVE polling timeoutBoris Brezillon
Experience has shown that 1ms is sometimes not enough, even when the GPU is running at its maximum frequency, not to mention that an MMU operation might take longer if the GPU is running at a lower frequency, which is likely to be the case if devfreq is active. Let's pick a significantly bigger timeout value (1ms -> 100ms) to be on the safe side. v5: * New patch Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> Reviewed-by: Steven Price <steven.price@arm.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210630062751.2832545-17-boris.brezillon@collabora.com
2021-07-01drm/panfrost: Queue jobs on the hardwareSteven Price
The hardware has a set of '_NEXT' registers that can hold a second job while the first is executing. Make use of these registers to enqueue a second job per slot. v5: * Fix a comment in panfrost_job_init() v3: * Fix the done/err job dequeuing logic to get a valid active state * Only enable the second slot on GPUs supporting jobchain disambiguation * Split interrupt handling in sub-functions Signed-off-by: Steven Price <steven.price@arm.com> Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> Reviewed-by: Steven Price <steven.price@arm.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210630062751.2832545-16-boris.brezillon@collabora.com
2021-07-01drm/panfrost: Kill in-flight jobs on FD closeBoris Brezillon
If the process who submitted these jobs decided to close the FD before the jobs are done it probably means it doesn't care about the result. v5: * Add a panfrost_exception_is_fault() helper and the DRM_PANFROST_EXCEPTION_MAX_NON_FAULT value v4: * Don't disable/restore irqs when taking the job_lock (not needed since this lock is never taken from an interrupt context) v3: * Set fence error to ECANCELED when a TERMINATED exception is received Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> Reviewed-by: Steven Price <steven.price@arm.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210630062751.2832545-15-boris.brezillon@collabora.com
2021-07-01drm/panfrost: Don't reset the GPU on job faults unless we really have toBoris Brezillon
If we can recover from a fault without a reset there's no reason to issue one. v3: * Drop the mention of Valhall requiring a reset on JOB_BUS_FAULT * Set the fence error to -EINVAL instead of having per-exception error codes Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> Reviewed-by: Steven Price <steven.price@arm.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210630062751.2832545-14-boris.brezillon@collabora.com
2021-07-01drm/panfrost: Reset the GPU when the AS_ACTIVE bit is stuckBoris Brezillon
Things are unlikely to resolve until we reset the GPU. Let's not wait for other faults/timeout to happen to trigger this reset. Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> Reviewed-by: Steven Price <steven.price@arm.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210630062751.2832545-13-boris.brezillon@collabora.com
2021-07-01drm/panfrost: Disable the AS on unhandled page faultsBoris Brezillon
If we don't do that, we have to wait for the job timeout to expire before the fault jobs gets killed. v3: * Make sure the AS is re-enabled when new jobs are submitted to the context Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> Reviewed-by: Steven Price <steven.price@arm.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210630062751.2832545-12-boris.brezillon@collabora.com
2021-07-01drm/panfrost: Make sure job interrupts are masked before resettingBoris Brezillon
This is not yet needed because we let active jobs be killed during by the reset and we don't really bother making sure they can be restarted. But once we start adding soft-stop support, controlling when we deal with the remaining interrrupts and making sure those are handled before the reset is issued gets tricky if we keep job interrupts active. Let's prepare for that and mask+flush job IRQs before issuing a reset. v4: * Add a comment explaining why we WARN_ON(!job) in the irq handler * Keep taking the job_lock when evicting stalled jobs v3: * New patch Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> Reviewed-by: Steven Price <steven.price@arm.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210630062751.2832545-11-boris.brezillon@collabora.com
2021-07-01drm/panfrost: Simplify the reset serialization logicBoris Brezillon
Now that we can pass our own workqueue to drm_sched_init(), we can use an ordered workqueue on for both the scheduler timeout tdr and our own reset work (which we use when the reset is not caused by a fault/timeout on a specific job, like when we have AS_ACTIVE bit stuck). This guarantees that the timeout handlers and reset handler can't run concurrently which drastically simplifies the locking. v5: * Don't call cancel_delayed_timeout() in the reset path (those works are canceled in drm_sched_stop()) v4: * Actually pass the reset workqueue to drm_sched_init() * Don't call cancel_work_sync() in panfrost_reset(). It will deadlock since it might be called from the reset work, which is executing and cancel_work_sync() will wait for the handler to return. Checking the reset pending status should avoid spurious resets v3: * New patch Suggested-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> Reviewed-by: Steven Price <steven.price@arm.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210630062751.2832545-10-boris.brezillon@collabora.com
2021-07-01drm/panfrost: Use a threaded IRQ for job interruptsBoris Brezillon
This should avoid switching to interrupt context when the GPU is under heavy use. v3: * Don't take the job_lock in panfrost_job_handle_irq() Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> Acked-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com> Reviewed-by: Steven Price <steven.price@arm.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210630062751.2832545-9-boris.brezillon@collabora.com
2021-07-01drm/panfrost: Expose a helper to trigger a GPU resetBoris Brezillon
Expose a helper to trigger a GPU reset so we can easily trigger reset operations outside the job timeout handler. Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> Reviewed-by: Steven Price <steven.price@arm.com> Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210630062751.2832545-8-boris.brezillon@collabora.com
2021-07-01drm/panfrost: Do the exception -> string translation using a tableBoris Brezillon
Do the exception -> string translation using a table. This way we get rid of those magic numbers and can easily add new fields if we need to attach extra information to exception types. v4: * Don't expose exception type to userspace * Merge the enum definition and the enum -> string table declaration in the same patch v3: * Drop the error field Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> Reviewed-by: Steven Price <steven.price@arm.com> Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210630062751.2832545-7-boris.brezillon@collabora.com
2021-07-01drm/panfrost: Drop the pfdev argument passed to panfrost_exception_name()Boris Brezillon
Currently unused. We'll add it back if we need per-GPU definitions. Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> Reviewed-by: Steven Price <steven.price@arm.com> Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210630062751.2832545-6-boris.brezillon@collabora.com
2021-07-01drm/panfrost: Get rid of the unused JS_STATUS_EVENT_ACTIVE definitionBoris Brezillon
Exception types will be defined as an enum. v4: * Fix typo in the commit message Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> Reviewed-by: Steven Price <steven.price@arm.com> Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210630062751.2832545-5-boris.brezillon@collabora.com
2021-07-01drm/panfrost: Make ->run_job() return an ERR_PTR() when appropriateBoris Brezillon
If the fence creation fail, we can return the error pointer directly. The core will update the fence error accordingly. Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> Reviewed-by: Steven Price <steven.price@arm.com> Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210630062751.2832545-4-boris.brezillon@collabora.com
2021-07-01drm/sched: Allow using a dedicated workqueue for the timeout/fault tdrBoris Brezillon
Mali Midgard/Bifrost GPUs have 3 hardware queues but only a global GPU reset. This leads to extra complexity when we need to synchronize timeout works with the reset work. One solution to address that is to have an ordered workqueue at the driver level that will be used by the different schedulers to queue their timeout work. Thanks to the serialization provided by the ordered workqueue we are guaranteed that timeout handlers are executed sequentially, and can thus easily reset the GPU from the timeout handler without extra synchronization. v5: * Add a new paragraph to the timedout_job() method v3: * New patch v4: * Actually use the timeout_wq to queue the timeout work Suggested-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> Reviewed-by: Steven Price <steven.price@arm.com> Reviewed-by: Lucas Stach <l.stach@pengutronix.de> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Acked-by: Christian König <christian.koenig@amd.com> Cc: Qiang Yu <yuq825@gmail.com> Cc: Emma Anholt <emma@anholt.net> Cc: Alex Deucher <alexander.deucher@amd.com> Cc: "Christian König" <christian.koenig@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210630062751.2832545-3-boris.brezillon@collabora.com
2021-07-01drm/sched: Document what the timedout_job method should doBoris Brezillon
The documentation is a bit vague and doesn't really describe what the ->timedout_job() is expected to do. Let's add a few more details. v5: * New patch Suggested-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20210630062751.2832545-2-boris.brezillon@collabora.com
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-12-01 20:39:08 +0000