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path: root/drivers/misc/mei/pxp
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2024-06-19Merge drm/drm-next into drm-intel-nextJani Nikula
Sync to v6.10-rc3. Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2024-05-31drm: move i915_pxp_tee_interface.h under include/drm/intelJani Nikula
Clean up the top level include/drm directory by grouping all the Intel specific files under a common subdirectory. Cc: Daniel Vetter <daniel@ffwll.ch> Cc: Dave Airlie <airlied@gmail.com> Cc: Lucas De Marchi <lucas.demarchi@intel.com> Cc: Tomas Winkler <tomas.winkler@intel.com> Acked-by: Lucas De Marchi <lucas.demarchi@intel.com> Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/5c1626978d2552ef5732dcf9427c903046afb9c1.1717075103.git.jani.nikula@intel.com
2024-05-31drm: move i915_component.h under include/drm/intelJani Nikula
Clean up the top level include/drm directory by grouping all the Intel specific files under a common subdirectory. v2: Also change Documentation/gpu/i915.rst (Andi) Cc: Daniel Vetter <daniel@ffwll.ch> Cc: Dave Airlie <airlied@gmail.com> Cc: Lucas De Marchi <lucas.demarchi@intel.com> Cc: Tomas Winkler <tomas.winkler@intel.com> Cc: Jaroslav Kysela <perex@perex.cz> Cc: Takashi Iwai <tiwai@suse.com> Acked-by: Lucas De Marchi <lucas.demarchi@intel.com> Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/a8c07233a8234858eb6711140482ef8db4c91cf4.1717075103.git.jani.nikula@intel.com
2024-04-23mei: pxp: match against PCI_CLASS_DISPLAY_OTHERDaniele Ceraolo Spurio
The ATS-M class is PCI_CLASS_DISPLAY_OTHER instead of PCI_CLASS_DISPLAY_VGA, so we need to match against that class as well. The matching is still restricted to Intel devices only. Fixes: ceeedd951f8a ("mei: pxp: match without driver name") Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20240421090701.216028-1-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-01-30mei: pxp: add dependency on Xe driverAlexander Usyskin
Optionally depend on either i915 or Xe drivers. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20240123101625.220365-5-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-01-30mei: pxp: match without driver nameAlexander Usyskin
Xe driver uses this component too, but current match function matches by i915 driver name. Remove dependency on i915 driver name in component_match function. Use PCI header information to match Intel graphics device. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20240123101625.220365-3-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-12-15mei: rework Kconfig dependenciesArnd Bergmann
The dependencies in the mei framework are inconsistent, with some symbols using 'select INTEL_MEI' to force it being enabled and others using 'depends on INTEL_MEI'. In general, one should not select user-visible symbols, so change all of these to normal dependencies, but change the default on INTEL_MEI to be enabled when building a kernel for an Intel CPU with ME or a generic x86 kernel. Having consistent dependencies makes the 'menuconfig' listing more readable by using proper indentation. A large if/endif block is just a simpler syntax than repeating the dependencies for each symbol. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Wentong Wu <wentong.wu@intel.com> Link: https://lore.kernel.org/r/20231214183946.109124-2-arnd@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-12-15mei: pxp: spdx should be at first lineAlexander Usyskin
Remove stray empty line at the beginning of the file to have SPDX header t the first line. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20231214143752.294008-1-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-11-27mei: pxp: fix mei_pxp_send_message return valueAlexander Usyskin
mei_pxp_send_message() should return zero on success and cannot propagate number of bytes as returned by internally called mei_cldev_send(). Fixes: ee5cb39348e6 ("mei: pxp: recover from recv fail under memory pressure") Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20231126092449.88310-1-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-10-18mei: update mei-pxp's component interface with timeoutsAlan Previn
In debugging platform or firmware related MEI-PXP connection issues, having a timeout when clients (such as i915) calling into mei-pxp's send/receive functions have proven useful as opposed to blocking forever until the kernel triggers a watchdog panic (when platform issues are experienced). Update the mei-pxp component interface send and receive functions to take in timeouts. Signed-off-by: Alan Previn <alan.previn.teres.alexis@intel.com> Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20231011110157.247552-5-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-10-18mei: pxp: re-enable client on errorsAlexander Usyskin
Disable and enable mei-pxp client on errors to clean the internal state. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20231011110157.247552-4-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-10-18mei: pxp: recover from recv fail under memory pressureAlexander Usyskin
Under memory pressure recv fails due to kmalloc failure, and if drivers(pxp) retry send/receive, send blocks indefinitely. Send without recv leaves the channel in a bad state. Retry send attempt after small timeout and reset the channel if the retry failed on kmalloc failure too. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Alan Previn <alan.previn.teres.alexis@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20231011110157.247552-3-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-07-30mei: pxp: Keep a const qualifier when calling mei_cldev_send()Christophe JAILLET
The API has been fixed in commit 0912ef4855e8 ("mei: constify passed buffers and structures"), so there is no more need to drop the const qualifier and the comment can be removed as-well. Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Link: https://lore.kernel.org/r/23c078181575e65ff660f993bc6eb38753b3d5e7.1689971167.git.christophe.jaillet@wanadoo.fr Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-03-23mei: Move uuid.h to the MEI namespaceAndy Shevchenko
There is only a single user of the UUID uAPI, let's make it part of that user. The way it's done is to prevent compilation time breakage for the user space that does #include <linux/uuid.h> In the future MEI user space tools can switch over to use mei_uuid.h. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20230310170747.22782-1-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-20mei: pxp: Use correct macros to initialize uuid_leAndy Shevchenko
GUID_INIT() is for internal guid_t type and shouldn't be used for the uuid_le. I.o.w. relying on the implementation details is layering violation. Use correct macros to initialize uuid_le. Fixes: c2004ce99ed7 ("mei: pxp: export pavp client to me client bus") Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20221228160558.21311-1-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-10-03mei: pxp: support matching with a gfx discrete cardTomas Winkler
With on-boards graphics card, both i915 and MEI are in the same device hierarchy with the same parent, while for discrete gfx card the MEI is its child device. Adjust the match function for that scenario by matching MEI parent device with i915. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Cc: Vitaly Lubart <vitaly.lubart@intel.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Alan Previn <alan.previn.teres.alexis@intel.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://patchwork.freedesktop.org/patch/msgid/20220928004145.745803-7-daniele.ceraolospurio@intel.com
2022-10-03mei: pxp: add command streamer API to the PXP driverVitaly Lubart
The discrete graphics card with GSC firmware using command streamer API hence it requires to enhance pxp module with the new gsc_command() handler. The handler is implemented via mei_pxp_gsc_command() which is just a thin wrapper around mei_cldev_send_gsc_command() Signed-off-by: Vitaly Lubart <vitaly.lubart@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Alan Previn <alan.previn.teres.alexis@intel.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://patchwork.freedesktop.org/patch/msgid/20220928004145.745803-6-daniele.ceraolospurio@intel.com
2022-04-29misc/mei: Add NULL check to component match callback functionsWon Chung
Currently, component_match callback functions used in mei refers to the driver name, assuming that the component device being matched has a driver bound. It can cause a NULL pointer dereference when a device without a driver bound registers a component. This is due to the nature of the component framework where all registered components are matched in any component_match callback functions. So even if a component is registered by a totally irrelevant device, that component is also shared to these callbacks for i915 driver. To prevent totally irrelevant device being matched for i915 and causing a NULL pointer dereference for checking driver name, add a NULL check on dev->driver to check if there is a driver bound before checking the driver name. In the future, the string compare on the driver name, "i915" may need to be refactored too. Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Reviewed-by: Prashant Malani <pmalani@chromium.org> Signed-off-by: Won Chung <wonchung@google.com> Acked-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-10-04mei: pxp: export pavp client to me client busVitaly Lubart
Export PAVP client to work with i915 driver, for binding it uses kernel component framework. v2:drop debug prints, refactor match code to match mei_hdcp (Tomas) Signed-off-by: Vitaly Lubart <vitaly.lubart@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210924191452.1539378-3-alan.previn.teres.alexis@intel.com
generated by cgit (git 2.34.1) at 2025-07-17 22:05:24 +0000