- 20 Apr, 2023 20 commits
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Nikita Travkin authored
This bridge doesn't actually implement HPD due to it being way too slow but instead expects the panel driver to wait enough to assume HPD is asserted. However some panels (such as the generic 'edp-panel') expect the bridge to deal with the delay and pass maximum delay to the aux instead. In order to support such panels, add a dummy implementation of wait that would just sleep the maximum delay and assume no failure has happened. Signed-off-by:
Nikita Travkin <nikita@trvn.ru> Reviewed-by:
Douglas Anderson <dianders@chromium.org> Signed-off-by:
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Thomas Zimmermann authored
Include <asm-generic/fb.h> and set the required preprocessor tokens correctly. x86 now implements its own set of fb helpers, but still follows the overall pattern of the other <asm/fb.h> files. v3: * clarified commit message Signed-off-by:
Thomas Zimmermann <tzimmermann@suse.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Acked-by:
Arnd Bergmann <arnd@arndb.de> Acked-by:
Helge Deller <deller@gmx.de> Link: https://patchwork.freedesktop.org/patch/msgid/20230417125651.25126-20-tzimmermann@suse.de
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Thomas Zimmermann authored
Replace sparc64's fb_pgprotect() with the generic one from <asm-generic/fb.h>. On sparc, pgprot_writecombine() and pgprot_noncached() are the same; hence no functional changes v3: * use default implementation for fb_pgprotect() on sparc64 (Arnd) v2: * restore the original fb_pgprotect() Signed-off-by:
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Thomas Zimmermann authored
Other architectures implment fb_is_primary_device() in a source file. Do the same on sparc. No functional changes, but allows to remove several include statement from <asm/fb.h>. v2: * don't include <asm/prom.h> in header file Signed-off-by:
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Thomas Zimmermann authored
Replace the architecture's fbdev helpers with the generic ones from <asm-generic/fb.h>. No functional changes. v2: * use default implementation for fb_pgprotect() (Arnd) Signed-off-by:
John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Acked-by:
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Thomas Zimmermann authored
Replace the architecture's fb_is_primary_device() with the generic one from <asm-generic/fb.h>. No functional changes. Signed-off-by:
Michael Ellerman <mpe@ellerman.id.au> Acked-by:
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Thomas Zimmermann authored
Replace the architecture's fbdev helpers with the generic ones from <asm-generic/fb.h>. On PARISC, pgprot_writecombine() and pgprot_noncached() are the same; hence no functional changes. v3: * use default implementation for fb_pgprotect() (Arnd) Signed-off-by:
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Thomas Zimmermann authored
Move PARISC's implementation of fb_is_primary_device() into the architecture directory. This the place of the declaration and where other architectures implement this function. No functional changes. Signed-off-by:
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Thomas Zimmermann authored
Fix trailing whitespaces. No functional changes. Signed-off-by:
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Thomas Zimmermann authored
STI core files have been located in console and fbdev code. Move the source code and header to the directories for video helpers. Also update the config and build rules such that the code depends on the config symbol CONFIG_STI_CORE, which STI console and STI framebuffer select automatically. Cleans up the console makefile and prepares PARISC to implement fb_is_primary_device() within the arch/ directory. No functional changes. Signed-off-by:
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Thomas Zimmermann authored
Fix trailing whitespaces. No functional changes. Signed-off-by:
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Thomas Zimmermann authored
Replace the architecture's fb_is_primary_device() with the generic one from <asm-generic/fb.h>. No functional changes. Signed-off-by:
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Thomas Zimmermann authored
Replace the architecture's fb_is_primary_device() with the generic one from <asm-generic/fb.h>. No functional changes. v2: * provide empty fb_pgprotect() on non-MMU systems Signed-off-by:
Geert Uytterhoeven <geert@linux-m68k.org> Acked-by:
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Thomas Zimmermann authored
Merge all variants of fb_pgprotect() into a single function body. There are two different cases for MMU systems. For non-MMU systems, the function body will be empty. No functional changes, but this will help with the switch to <asm-generic/fb.h>. Signed-off-by:
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Thomas Zimmermann authored
Replace the architecture's fbdev helpers with the generic ones from <asm-generic/fb.h>. No functional changes. v2: * use default implementation for fb_pgprotect() (Arnd) Signed-off-by:
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Thomas Zimmermann authored
Replace the architecture's fb_is_primary_device() with the generic one from <asm-generic/fb.h>. No functional changes. Signed-off-by:
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Thomas Zimmermann authored
Replace the architecture's fbdev helpers with the generic ones from <asm-generic/fb.h>. No functional changes. v2: * use default implementation for fb_pgprotect() (Arnd) Signed-off-by:
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Thomas Zimmermann authored
Replace the architecture's fbdev helpers with the generic ones from <asm-generic/fb.h>. No functional changes. v2: * use default implementation for fb_pgprotect() (Arnd) Signed-off-by:
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Thomas Zimmermann authored
Replace the architecture's fbdev helpers with the generic ones from <asm-generic/fb.h>. On arc, pgprot_writecombine() and pgprot_noncached() are the same; hence no functional changes. v3: * use default implementation for fb_pgprotect() (Arnd) Signed-off-by:
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Thomas Zimmermann authored
Generic implementations of fb_pgprotect() and fb_is_primary_device() have been in the source code for a long time. Prepare the header file to make use of them. Improve the code by using an inline function for fb_pgprotect() and by removing include statements. The default mode set by fb_pgprotect() is now writecombine, which is what most platforms want. Symbols are protected by preprocessor guards. Architectures that provide a symbol need to define a preprocessor token of the same name and value. Otherwise the header file will provide a generic implementation. This pattern has been taken from <asm/io.h>. v3: * include the correct header files v2: * use writecombine mappings by default (Arnd) Signed-off-by:
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- 19 Apr, 2023 2 commits
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Maíra Canal authored
Currently, drm_gem_fb_create() doesn't check if the pixel format is supported, which can lead to the acceptance of invalid pixel formats e.g. the acceptance of invalid modifiers. Therefore, add a check for valid formats on drm_gem_fb_create(). Note that this check is only valid for atomic drivers, because, for non-atomic drivers, checking drm_any_plane_has_format() is not possible since the format list for the primary plane is fake, and we'd therefore reject valid formats. Adding this check to drm_gem_fb_create() will guarantee that the igt@kms_addfb_basic@addfb25-bad-modifier IGT test passes for drivers using this callback. This commit is a recapture of a series sent a while ago. Initially, I sent a patch [1] similar to this one in which I introduced the format check to drm_gem_fb_create(). Based on the feedback on the patch, I placed the check inside framebuffer_check() [2] so that it wouldn't be needed to hit any driver-specific code path when the check fails. Therefore, we could remove the check from the specific drivers (i915, amdgpu, and vmwgfx). But, with some new feedback, it was shown that introducing this check inside framebuffer_check() is problematic for the i915 driver [3]. For the i915 driver, in the legacy case, in which we don't get the modifier from the userspace, i915's fb_create hook computes the right modifier, which isn't necessarily linear. Therefore, if we check the modifier before that point, we might get wrong answers. So, I kept the check inside the i915 driver and removed the check from amdgpu and vmwgfx [4]. But, this yet hasn't solved the i915 problem [5]. As we cannot add the check inside framebuffer_check() without affecting the i915 behavior, this commit went back to the original patch. This way we can guarantee a more uniform behavior from the drivers that use the drm_gem_fb_create() callback. [1] https://lore.kernel.org/dri-devel/20230103125322.855089-1-mcanal@igalia.com/T/ [2] https://lore.kernel.org/dri-devel/20230109105807.18172-1-mcanal@igalia.com/T/ [3] https://lore.kernel.org/dri-devel/Y8AAdW2y7zN7DCUZ@intel.com/ [4] https://lore.kernel.org/dri-devel/20230113112743.188486-1-mcanal@igalia.com/T/ [5] https://lore.kernel.org/dri-devel/Y8FXWvEhO7GCRKVJ@intel.com/Signed-off-by:
Maíra Canal <mcanal@igalia.com> Reviewed-by:
Ville Syrjälä <ville.syrjala@linux.intel.com> Acked-by:
Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by:
Maíra Canal <mairacanal@riseup.net> Link: https://patchwork.freedesktop.org/patch/msgid/20230412142923.136707-1-mcanal@igalia.com
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Danilo Krummrich authored
It already happend a few times that patches slipped through which implemented access to an entity through a job that was already removed from the entities queue. Since jobs and entities might have different lifecycles, this can potentially cause UAF bugs. In order to make it obvious that a jobs entity pointer shouldn't be accessed after drm_sched_entity_pop_job() was called successfully, set the jobs entity pointer to NULL once the job is removed from the entity queue. Moreover, debugging a potential NULL pointer dereference is way easier than potentially corrupted memory through a UAF. Signed-off-by:
Danilo Krummrich <dakr@redhat.com> Link: https://lore.kernel.org/r/20230418100453.4433-1-dakr@redhat.comReviewed-by:
Luben Tuikov <luben.tuikov@amd.com> Signed-off-by:
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- 17 Apr, 2023 14 commits
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Markus Elfring authored
The address of a data structure member was determined before a corresponding null pointer check in the implementation of the functions “nvkm_fanpwm_create” and “nvkm_fantog_create”. Thus avoid the risk for undefined behaviour by moving the assignment for the data structure member “fan” behind two null pointer checks. This issue was detected by using the Coccinelle software. Signed-off-by:
Markus Elfring <elfring@users.sourceforge.net> Reviewed-by:
Karol Herbst <kherbst@redhat.com> Signed-off-by:
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Markus Elfring authored
The variable “pbus” was read only once in the implementation of the function “nvkm_pcie_set_link”. Thus move the usage of an expression into a parameter for a function call. Signed-off-by:
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Markus Elfring authored
The address of a data structure member was determined before a corresponding null pointer check in the implementation of the function “nvkm_pcie_set_link”. Thus avoid the risk for undefined behaviour by moving the assignment for the variable “subdev” behind some condition checks. This issue was detected by using the Coccinelle software. Signed-off-by:
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Markus Elfring authored
The address of a data structure member was determined before a corresponding null pointer check in the implementation of the function “nvkm_pstate_new”. Thus avoid the risk for undefined behaviour by moving the assignment for the variable “cstate” behind the null pointer check. This issue was detected by using the Coccinelle software. Signed-off-by:
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Markus Elfring authored
drm/nouveau/bios/power_budget: Move an expression into a macro call parameter in nvbios_power_budget_header() The address of a data structure member was determined before a corresponding null pointer check in the implementation of the function “nvbios_power_budget_header”. Thus avoid the risk for undefined behaviour by moving the usage of an expression into a parameter for a macro call in one if branch. This issue was detected by using the Coccinelle software. Signed-off-by:
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Markus Elfring authored
Five strings which did not contain a data format specification should be put into a sequence. Thus use the corresponding function “seq_puts”. This issue was detected by using the Coccinelle software. Signed-off-by:
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Markus Elfring authored
A single character (line break) should be put into a sequence. Thus use the corresponding function “seq_putc”. This issue was detected by using the Coccinelle software. Signed-off-by:
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Markus Elfring authored
drm/nouveau/debugfs: Move a variable assignment behind a null pointer check in nouveau_debugfs_pstate_get() The address of a data structure member was determined before a corresponding null pointer check in the implementation of the function “nouveau_debugfs_pstate_get”. Thus avoid the risk for undefined behaviour by moving the assignment for the variable “ctrl” behind the null pointer check. This issue was detected by using the Coccinelle software. Signed-off-by:
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Markus Elfring authored
drm/nouveau/debugfs: Move an expression into a function call parameter in nouveau_debugfs_pstate_set() The address of a data structure member was determined before a corresponding null pointer check in the implementation of the function “nouveau_debugfs_pstate_set”. Thus avoid the risk for undefined behaviour by moving the usage of an expression into a parameter for a function call at the end. This issue was detected by using the Coccinelle software. Signed-off-by:
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Konrad Dybcio authored
Some Lenovo J606F tablets come with a 2K (2000x1200) 60Hz 11" 5:3 video mode display. Add support for these panels. Reviewed-by:
Linus Walleij <linus.walleij@linaro.org> Reviewed-by:
Jianhua Lu <lujianhua000@gmail.com> Signed-off-by:
Konrad Dybcio <konrad.dybcio@linaro.org> Signed-off-by:
Neil Armstrong <neil.armstrong@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20230412-topic-lenovopanel-v3-4-bcf9ba4de46f@linaro.org
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Konrad Dybcio authored
Some bright vendors mount their display panels upside down. Add the required pieces to allow for accounting for that. Reviewed-by:
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Konrad Dybcio authored
This chip supports controlling the backlight via DCS commands, on at least some panels. Add support for doing so. Note this may only concern the NT36523*W* variant. Nobody knows, really, there's no docs. Reviewed-by:
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Konrad Dybcio authored
Some Lenovo J606F tablets come with a 2K (2000x1200) 60Hz 11" 5:3 video mode display. Document it and allow rotation while at it (Lenovo mounted it upside down!). Reviewed-by:
Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by:
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Sui Jingfeng authored
The dma_resv_wait_timeout() function return a value greater than zero on success. Signed-off-by:
Sui Jingfeng <suijingfeng@loongson.cn> Reviewed-by:
Christian König <christian.koenig@amd.com> Signed-off-by:
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- 16 Apr, 2023 4 commits
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Thomas Zimmermann authored
Backmerging drm-next to sync with msm tree. Resolves a conflict between aperture-helper changes and msm's use of those interfaces. Signed-off-by: -
Thomas Zimmermann authored
The hardware for gma500 is different from the rest, as it uses stolen framebuffer memory that is not available via PCI BAR. The regular PCI removal helper cannot detect the framebuffer, while the non-PCI helper misses possible conflicting VGA devices (i.e., a framebuffer or text console). Gma500 therefore calls both helpers to catch all cases. It's confusing as it implies that there's something about the PCI device that requires ownership management. The relationship between the PCI device and the VGA devices is non-obvious. At worst, readers might assume that calling two functions for clearing aperture ownership is a bug in the driver. Hence, move the PCI removal helper's code for VGA functionality into a separate function and call this function from gma500. Documents the purpose of each call to aperture helpers. The change contains comments and example code form the discussion at [1]. v5: * fix grammar in gma500 comment (Javier) Signed-off-by:
Javier Martinez Canillas <javierm@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230406132109.32050-10-tzimmermann@suse.de
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Daniel Vetter authored
vga_default_device really is supposed to cover all corners, at least for x86. Additionally checking for rom shadowing should be redundant, because the bios/fw only does that for the boot vga device. If this turns out to be wrong, then most likely that's a special case which should be added to the vgaarb code, not replicated all over. Patch motived by changes to the aperture helpers, which also have this open code in a bunch of places, and which are all removed in a clean-up series. This function here is just for selecting the default fbdev device for fbcon, but I figured for consistency it might be good to throw this patch in on top. Note that the shadow rom check predates vgaarb, which was only wired up in commit 88674088 ("x86: Use vga_default_device() when determining whether an fb is primary"). That patch doesn't explain why we still fall back to the shadow rom check. v4: - fix commit message style (i.e., commit 1234 ("...")) - fix Daniel's S-o-b address v5: - add back an S-o-b tag with Daniel's Intel address Signed-off-by:
Daniel Vetter <daniel.vetter@intel.com> Signed-off-by:
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Daniel Vetter authored
Instead of calling aperture_remove_conflicting_devices() to remove the conflicting devices, just call to aperture_detach_devices() to detach the device that matches the same PCI BAR / aperture range. Since the former is just a wrapper of the latter plus a sysfb_disable() call, and now that's done in this function but only for the primary devices. This fixes a regression introduced by commit ee7a69aa ("fbdev: Disable sysfb device registration when removing conflicting FBs"), where we remove the sysfb when loading a driver for an unrelated pci device, resulting in the user losing their efifb console or similar. Note that in practice this only is a problem with the nvidia blob, because that's the only gpu driver people might install which does not come with an fbdev driver of it's own. For everyone else the real gpu driver will restore a working console. Also note that in the referenced bug there's confusion that this same bug also happens on amdgpu. But that was just another amdgpu specific regression, which just happened to happen at roughly the same time and with the same user-observable symptoms. That bug is fixed now, see https://bugzilla.kernel.org/show_bug.cgi?id=216331#c15 Note that we should not have any such issues on non-pci multi-gpu issues, because I could only find two such cases: - SoC with some external panel over spi or similar. These panel drivers do not use drm_aperture_remove_conflicting_framebuffers(), so no problem. - vga+mga, which is a direct console driver and entirely bypasses all this. For the above reasons the cc: stable is just notionally, this patch will need a backport and that's up to nvidia if they care enough. v2: - Explain a bit better why other multi-gpu that aren't pci shouldn't have any issues with making all this fully pci specific. v3 - polish commit message (Javier) v4: - Fix commit message style (i.e., commit 1234 ("...")) - fix Daniel's S-o-b address v5: - add back an S-o-b tag with Daniel's Intel address Fixes: ee7a69aa ("fbdev: Disable sysfb device registration when removing conflicting FBs") Tested-by:
Aaron Plattner <aplattner@nvidia.com> Reviewed-by:
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