# # (C) COPYRIGHT 2012-2020 ARM Limited. All rights reserved. # # This program is free software and is provided to you under the terms of the # GNU General Public License version 2 as published by the Free Software # Foundation, and any use by you of this program is subject to the terms # of such GNU licence. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, you can access it online at # http://www.gnu.org/licenses/gpl-2.0.html. # # SPDX-License-Identifier: GPL-2.0 # # menuconfig MALI_MIDGARD tristate "Mali Midgard series support" select GPU_TRACEPOINTS if ANDROID select DMA_SHARED_BUFFER default n help Enable this option to build support for a ARM Mali Midgard GPU. To compile this driver as a module, choose M here: this will generate a single module, called mali_kbase. config MALI_GATOR_SUPPORT bool "Enable Streamline tracing support" depends on MALI_MIDGARD default y help Enables kbase tracing used by the Arm Streamline Performance Analyzer. The tracepoints are used to derive GPU activity charts in Streamline. config MALI_MIDGARD_DVFS bool "Enable legacy DVFS" depends on MALI_MIDGARD && !MALI_DEVFREQ default n help Choose this option to enable legacy DVFS in the Mali Midgard DDK. config MALI_MIDGARD_ENABLE_TRACE bool "Enable kbase tracing" depends on MALI_MIDGARD default y if MALI_DEBUG default n help Enables tracing in kbase. Trace log available through the "mali_trace" debugfs file, when the CONFIG_DEBUG_FS is enabled config MALI_DEVFREQ bool "devfreq support for Mali" depends on MALI_MIDGARD && PM_DEVFREQ default n help Support devfreq for Mali. Using the devfreq framework and, by default, the simpleondemand governor, the frequency of Mali will be dynamically selected from the available OPPs. config MALI_DMA_FENCE bool "DMA_BUF fence support for Mali" depends on MALI_MIDGARD default n help Support DMA_BUF fences for Mali. This option should only be enabled if the Linux Kernel has built in support for DMA_BUF fences. # MALI_SEC_INTEGRATION config MALI_PLATFORM_THIRDPARTY default y bool "Third Party Platform" config MALI_PLATFORM_THIRDPARTY_NAME depends on MALI_MIDGARD string "Platform name" default "exynos" help Enter the name of the desired platform configuration directory to include in the build. 'platform/$(MALI_PLATFORM_NAME)/Kbuild' must exist. config MALI_ARBITER_SUPPORT bool "Enable arbiter support for Mali" depends on MALI_MIDGARD default n help Enable support for the arbiter interface in the driver. This allows an external arbiter to manage driver access to GPU hardware in a virtualized environment If unsure, say N. # MALI_EXPERT configuration options menuconfig MALI_EXPERT depends on MALI_MIDGARD bool "Enable Expert Settings" default n help Enabling this option and modifying the default settings may produce a driver with performance or other limitations. config MALI_CORESTACK bool "Support controlling power to the GPU core stack" depends on MALI_MIDGARD && MALI_EXPERT default n help Enabling this feature on supported GPUs will let the driver powering on/off the GPU core stack independently without involving the Power Domain Controller. This should only be enabled on platforms which integration of the PDC to the Mali GPU is known to be problematic. This feature is currently only supported on t-Six and t-HEx GPUs. If unsure, say N. config MALI_DEBUG bool "Debug build" depends on MALI_MIDGARD && MALI_EXPERT default n help Select this option for increased checking and reporting of errors. config MALI_FENCE_DEBUG bool "Debug sync fence usage" depends on MALI_MIDGARD && MALI_EXPERT && (SYNC || SYNC_FILE) default y help Select this option to enable additional checking and reporting on the use of sync fences in the Mali driver. This will add a 3s timeout to all sync fence waits in the Mali driver, so that when work for Mali has been waiting on a sync fence for a long time a debug message will be printed, detailing what fence is causing the block, and which dependent Mali atoms are blocked as a result of this. The timeout can be changed at runtime through the js_soft_timeout device attribute, where the timeout is specified in milliseconds. config MALI_NO_MALI bool "No Mali" depends on MALI_MIDGARD && MALI_EXPERT default n help This can be used to test the driver in a simulated environment whereby the hardware is not physically present. If the hardware is physically present it will not be used. This can be used to test the majority of the driver without needing actual hardware or for software benchmarking. All calls to the simulated hardware will complete immediately as if the hardware completed the task. config MALI_REAL_HW def_bool !MALI_NO_MALI config MALI_ERROR_INJECT bool "Error injection" depends on MALI_MIDGARD && MALI_EXPERT && MALI_NO_MALI default n help Enables insertion of errors to test module failure and recovery mechanisms. config MALI_SYSTEM_TRACE bool "Enable system event tracing support" depends on MALI_MIDGARD && MALI_EXPERT default y if MALI_DEBUG default n help Choose this option to enable system trace events for each kbase event. This is typically used for debugging but has minimal overhead when not in use. Enable only if you know what you are doing. config MALI_2MB_ALLOC bool "Attempt to allocate 2MB pages" depends on MALI_MIDGARD && MALI_EXPERT default n help Rather than allocating all GPU memory page-by-page, attempt to allocate 2MB pages from the kernel. This reduces TLB pressure and helps to prevent memory fragmentation. If in doubt, say N config MALI_PWRSOFT_765 bool "PWRSOFT-765 ticket" depends on MALI_MIDGARD && MALI_EXPERT default n help PWRSOFT-765 fixes devfreq cooling devices issues. The fix was merged in kernel v4.10, however if backported into the kernel then this option must be manually selected. If using kernel >= v4.10 then say N, otherwise if devfreq cooling changes have been backported say Y to avoid compilation errors. config MALI_MEMORY_FULLY_BACKED bool "Memory fully physically-backed" depends on MALI_MIDGARD && MALI_EXPERT default n help This option enables full physical backing of all virtual memory allocations in the kernel. Notice that this build option only affects allocations of grow-on-GPU-page-fault memory. config MALI_DMA_BUF_MAP_ON_DEMAND bool "Map imported dma-bufs on demand" depends on MALI_MIDGARD default n help This option caused kbase to set up the GPU mapping of imported dma-buf when needed to run atoms. This is the legacy behaviour. This is intended for testing and the option will get removed in the future. config MALI_DMA_BUF_LEGACY_COMPAT bool "Enable legacy compatibility cache flush on dma-buf map" depends on MALI_MIDGARD && !MALI_DMA_BUF_MAP_ON_DEMAND default n help This option enables compatibility with legacy dma-buf mapping behavior, then the dma-buf is mapped on import, by adding cache maintenance where MALI_DMA_BUF_MAP_ON_DEMAND would do the mapping, including a cache flush. This option might work-around issues related to missing cache flushes in other drivers. This only has an effect for clients using UK 11.18 or older. For later UK versions it is not possible. config MALI_HW_ERRATA_1485982_NOT_AFFECTED bool "Disable workaround for BASE_HW_ISSUE_GPU2017_1336" depends on MALI_MIDGARD && MALI_EXPERT default n help This option disables the default workaround for GPU2017-1336. The workaround keeps the L2 cache powered up except for powerdown and reset. The workaround introduces a limitation that will prevent the running of protected mode content on fully coherent platforms, as the switch to IO coherency mode requires the L2 to be turned off. config MALI_HW_ERRATA_1485982_USE_CLOCK_ALTERNATIVE bool "Use alternative workaround for BASE_HW_ISSUE_GPU2017_1336" depends on MALI_MIDGARD && MALI_EXPERT && !MALI_HW_ERRATA_1485982_NOT_AFFECTED default n help This option uses an alternative workaround for GPU2017-1336. Lowering the GPU clock to a, platform specific, known good frequeuncy before powering down the L2 cache. The clock can be specified in the device tree using the property, opp-mali-errata-1485982. Otherwise the slowest clock will be selected. config MALI_GEM5_BUILD bool "Enable build of Mali kernel driver for GEM5" depends on MALI_MIDGARD default n help This option is to do a Mali GEM5 build. If unsure, say N. # Instrumentation options. config MALI_JOB_DUMP bool "Enable system level support needed for job dumping" depends on MALI_MIDGARD && MALI_EXPERT default n help Choose this option to enable system level support needed for job dumping. This is typically used for instrumentation but has minimal overhead when not in use. Enable only if you know what you are doing. config MALI_PRFCNT_SET_SECONDARY bool "Use secondary set of performance counters" depends on MALI_MIDGARD && MALI_EXPERT default n help Select this option to use secondary set of performance counters. Kernel features that depend on an access to the primary set of counters may become unavailable. Enabling this option will prevent power management from working optimally and may cause instrumentation tools to return bogus results. If unsure, say N. config MALI_PRFCNT_SET_SECONDARY_VIA_DEBUG_FS bool "Use secondary set of performance counters" depends on MALI_MIDGARD && MALI_EXPERT && !MALI_PRFCNT_SET_SECONDARY && DEBUG_FS default n help Select this option to make the secondary set of performance counters available at runtime via debugfs. Kernel features that depend on an access to the primary set of counters may become unavailable. This feature is unsupported and unstable, and may break at any time. Enabling this option will prevent power management from working optimally and may cause instrumentation tools to return bogus results. If unsure, say N. source "drivers/gpu/arm/b_r25p1/platform/Kconfig" source "drivers/gpu/arm/b_r25p1/tests/Kconfig"