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path: root/include/uapi/drm/msm_drm.h
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2025-07-05drm/msm: Add VM_BIND ioctlRob Clark1-1/+73
Add a VM_BIND ioctl for binding/unbinding buffers into a VM. This is only supported if userspace has opted in to MSM_PARAM_EN_VM_BIND. Signed-off-by: Rob Clark <robdclark@chromium.org> Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com> Tested-by: Antonino Maniscalco <antomani103@gmail.com> Reviewed-by: Antonino Maniscalco <antomani103@gmail.com> Patchwork: https://patchwork.freedesktop.org/patch/661524/
2025-07-05drm/msm: Add VM_BIND submitqueueRob Clark1-1/+8
This submitqueue type isn't tied to a hw ringbuffer, but instead executes on the CPU for performing async VM_BIND ops. Signed-off-by: Rob Clark <robdclark@chromium.org> Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com> Tested-by: Antonino Maniscalco <antomani103@gmail.com> Reviewed-by: Antonino Maniscalco <antomani103@gmail.com> Patchwork: https://patchwork.freedesktop.org/patch/661517/
2025-07-05drm/msm: Extract out syncobj helpersRob Clark1-13/+13
We'll be re-using these for the VM_BIND ioctl. Also, rename a few things in the uapi header to reflect that syncobj use is not specific to the submit ioctl. Signed-off-by: Rob Clark <robdclark@chromium.org> Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com> Tested-by: Antonino Maniscalco <antomani103@gmail.com> Reviewed-by: Antonino Maniscalco <antomani103@gmail.com> Patchwork: https://patchwork.freedesktop.org/patch/661512/
2025-07-05drm/msm: Add _NO_SHARE flagRob Clark1-0/+14
Buffers that are not shared between contexts can share a single resv object. This way drm_gpuvm will not track them as external objects, and submit-time validating overhead will be O(1) for all N non-shared BOs, instead of O(n). Signed-off-by: Rob Clark <robdclark@chromium.org> Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com> Tested-by: Antonino Maniscalco <antomani103@gmail.com> Reviewed-by: Antonino Maniscalco <antomani103@gmail.com> Patchwork: https://patchwork.freedesktop.org/patch/661497/
2025-07-05drm/msm: Add opt-in for VM_BINDRob Clark1-0/+24
Add a SET_PARAM for userspace to request to manage to the VM itself, instead of getting a kernel managed VM. In order to transition to a userspace managed VM, this param must be set before any mappings are created. Signed-off-by: Rob Clark <robdclark@chromium.org> Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com> Tested-by: Antonino Maniscalco <antomani103@gmail.com> Reviewed-by: Antonino Maniscalco <antomani103@gmail.com> Patchwork: https://patchwork.freedesktop.org/patch/661494/
2025-07-05drm/msm: Add PRR supportRob Clark1-0/+2
Add PRR (Partial Resident Region) is a bypass address which make GPU writes go to /dev/null and reads return zero. This is used to implement vulkan sparse residency. To support PRR/NULL mappings, we allocate a page to reserve a physical address which we know will not be used as part of a GEM object, and configure the SMMU to use this address for PRR/NULL mappings. Signed-off-by: Rob Clark <robdclark@chromium.org> Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com> Tested-by: Antonino Maniscalco <antomani103@gmail.com> Reviewed-by: Antonino Maniscalco <antomani103@gmail.com> Patchwork: https://patchwork.freedesktop.org/patch/661486/
2025-01-03drm/msm: Expose uche trap base via uapiDanylo Piliaiev1-0/+1
This adds MSM_PARAM_UCHE_TRAP_BASE that will be used by Mesa implementation for VK_KHR_shader_clock and GL_ARB_shader_clock. Signed-off-by: Danylo Piliaiev <dpiliaiev@igalia.com> Patchwork: https://patchwork.freedesktop.org/patch/627036/ Signed-off-by: Rob Clark <robdclark@chromium.org>
2024-10-03drm/msm/a6xx: Add a flag to allow preemption to submitqueue_createAntonino Maniscalco1-1/+4
Some userspace changes are necessary so add a flag for userspace to advertise support for preemption when creating the submitqueue. When this flag is not set preemption will not be allowed in the middle of the submitted IBs therefore mantaining compatibility with older userspace. The flag is rejected if preemption is not supported on the target, this allows userspace to know whether preemption is supported. Tested-by: Rob Clark <robdclark@gmail.com> Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8650-QRD Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8550-QRD Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8450-HDK Signed-off-by: Antonino Maniscalco <antomani103@gmail.com> Patchwork: https://patchwork.freedesktop.org/patch/618028/ Signed-off-by: Rob Clark <robdclark@chromium.org>
2024-08-30drm/msm: Expose expanded UBWC config uapiConnor Abbott1-0/+2
This adds extra parameters that affect UBWC tiling that will be used by the Mesa implementation of VK_EXT_host_image_copy. Signed-off-by: Connor Abbott <cwabbott0@gmail.com> Patchwork: https://patchwork.freedesktop.org/patch/607401/ Signed-off-by: Rob Clark <robdclark@chromium.org>
2024-06-21drm/msm: Add MSM_PARAM_RAYTRACING uapiConnor Abbott1-0/+1
Expose the value of the software fuse to userspace. Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Connor Abbott <cwabbott0@gmail.com> Patchwork: https://patchwork.freedesktop.org/patch/592044/ Signed-off-by: Rob Clark <robdclark@chromium.org>
2023-12-10drm/msm: Add param for the highest bank bitConnor Abbott1-0/+1
This parameter is programmed by the kernel and influences the tiling layout of images. Exposing it to userspace will allow it to tile/untile images correctly without guessing what value the kernel programmed, and allow us to change it in the future without breaking userspace. Signed-off-by: Connor Abbott <cwabbott0@gmail.com> Patchwork: https://patchwork.freedesktop.org/patch/571181/ Signed-off-by: Rob Clark <robdclark@chromium.org>
2023-11-21drm/msm/gem: Add metadataRob Clark1-0/+2
The EXT_external_objects extension is a bit awkward as it doesn't pass explicit modifiers, leaving the importer to guess with incomplete information. In the case of vk (turnip) exporting and gl (freedreno) importing, the "OPTIMAL_TILING_EXT" layout depends on VkImageCreateInfo flags (among other things), which the importer does not know. Which unfortunately leaves us with the need for a metadata back-channel. The contents of the metadata are defined by userspace. The EXT_external_objects extension is only required to work between compatible versions of gl and vk drivers, as defined by device and driver UUIDs. v2: add missing metadata kfree v3: Rework to move copy_from/to_user out from under gem obj lock to avoid angering lockdep about deadlocks against fs-reclaim Signed-off-by: Rob Clark <robdclark@chromium.org> Patchwork: https://patchwork.freedesktop.org/patch/566157/
2023-04-06drm/msm: Rename drm_msm_gem_submit_reloc::or in C++ codeDanylo Piliaiev1-0/+4
Clashes with C++ `or` keyword Signed-off-by: Danylo Piliaiev <dpiliaiev@igalia.com> Signed-off-by: Rob Clark <robdclark@chromium.org> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Patchwork: https://patchwork.freedesktop.org/patch/528751/ Link: https://lore.kernel.org/r/20230326163813.535762-1-robdclark@gmail.com Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
2023-03-29drm/msm: Add wait-boost supportRob Clark1-2/+12
Add a way for various userspace waits to signal urgency. Signed-off-by: Rob Clark <robdclark@chromium.org> Patchwork: https://patchwork.freedesktop.org/patch/525817/ Link: https://lore.kernel.org/r/20230308155322.344664-14-robdclark@gmail.com
2023-01-16drm/msm: Add MSM_SUBMIT_BO_NO_IMPLICITRob Clark1-1/+3
In cases where implicit sync is used, it is still useful (for things like sub-allocation, etc) to allow userspace to opt-out of implicit sync on per-BO basis. Signed-off-by: Rob Clark <robdclark@chromium.org> Patchwork: https://patchwork.freedesktop.org/patch/514216/ Link: https://lore.kernel.org/r/20221206192123.661448-1-robdclark@gmail.com
2022-11-02drm/msm: Add MSM_INFO_GET_FLAGSRob Clark1-0/+1
In some cases crosvm needs a way to query the cache flags to communicate them to the guest kernel for guest userspace mapping. Signed-off-by: Rob Clark <robdclark@chromium.org> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Patchwork: https://patchwork.freedesktop.org/patch/504453/ Link: https://lore.kernel.org/r/20220923173307.2429872-1-robdclark@gmail.com Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
2022-04-22drm/msm: Add a way for userspace to allocate GPU iovaRob Clark1-0/+3
The motivation at this point is mainly native userspace mesa driver in a VM guest. The one remaining synchronous "hotpath" is buffer allocation, because guest needs to wait to know the bo's iova before it can start emitting cmdstream/state that references the new bo. By allocating the iova in the guest userspace, we no longer need to wait for a response from the host, but can just rely on the allocation request being processed before the cmdstream submission. Allocation failures (OoM, etc) would just be treated as context-lost (ie. GL_GUILTY_CONTEXT_RESET) or subsequent allocations (or readpix, etc) can raise GL_OUT_OF_MEMORY. v2: Fix inuse check v3: Change mismatched iova case to -EBUSY Signed-off-by: Rob Clark <robdclark@chromium.org> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by: Dmitry Osipenko <dmitry.osipenko@collabora.com> Link: https://lore.kernel.org/r/20220411215849.297838-11-robdclark@gmail.com Signed-off-by: Rob Clark <robdclark@chromium.org>
2022-04-22drm/msm: Add a way to override processes comm/cmdlineRob Clark1-0/+2
In the cause of using the GPU via virtgpu, the host side process is really a sort of proxy, and not terribly interesting from the PoV of crash/fault logging. Add a way to override these per process so that we can see the guest process's name. v2: Handle kmalloc failure, add comment to explain kstrdup returns NULL if passed NULL [Dan Carpenter] Signed-off-by: Rob Clark <robdclark@chromium.org> Link: https://lore.kernel.org/r/20220317165144.222101-4-robdclark@gmail.com Signed-off-by: Rob Clark <robdclark@chromium.org>
2022-04-22drm/msm: Add support for pointer paramsRob Clark1-0/+2
The 64b value field is already suffient to hold a pointer instead of immediate, but we also need a length field. Signed-off-by: Rob Clark <robdclark@chromium.org> Link: https://lore.kernel.org/r/20220317165144.222101-2-robdclark@gmail.com Signed-off-by: Rob Clark <robdclark@chromium.org>
2022-03-05drm/msm: Add MSM_SUBMIT_FENCE_SN_INRob Clark1-1/+3
Add a way for userspace to specify the sequence number fence used to track completion of the submit. As the seqno fence is simply an incrementing counter which is local to the submitqueue, it is easy for userspace to know the next value. This is useful for native userspace drivers in a vm guest, as the guest to host roundtrip can have high latency. Assigning the fence seqno in the guest userspace allows the guest to continue without waiting for response from the host. Signed-off-by: Rob Clark <robdclark@chromium.org> Link: https://lore.kernel.org/r/20220224222321.60653-1-robdclark@gmail.com
2022-03-04drm/msm: Add SYSPROF param (v2)Rob Clark1-0/+1
Add a SYSPROF param for system profiling tools like Mesa's pps-producer (perfetto) to control behavior related to system-wide performance counter collection. In particular, for profiling, one wants to ensure that GPU context switches do not effect perfcounter state, and might want to suppress suspend (which would cause counters to lose state). v2: Swap the order in msm_file_private_set_sysprof() [sboyd] and initialize the sysprof_active refcount to one (because the under/ overflow checking in refcount_t doesn't expect a 0->1 transition) meaning that values greater than 1 means sysprof is active. Signed-off-by: Rob Clark <robdclark@chromium.org> Link: https://lore.kernel.org/r/20220304005317.776110-4-robdclark@gmail.com
2022-03-04drm/msm: Add SET_PARAM ioctlRob Clark1-12/+15
It was always expected to have a use for this some day, so we left a placeholder. Now we do. (And I expect another use in the not too distant future when we start allowing userspace to allocate GPU iova.) Signed-off-by: Rob Clark <robdclark@chromium.org> Link: https://lore.kernel.org/r/20220304005317.776110-3-robdclark@gmail.com
2021-07-28drm/msm: Utilize gpu scheduler prioritiesRob Clark1-1/+13
The drm/scheduler provides additional prioritization on top of that provided by however many number of ringbuffers (each with their own priority level) is supported on a given generation. Expose the additional levels of priority to userspace and map the userspace priority back to ring (first level of priority) and schedular priority (additional priority levels within the ring). Signed-off-by: Rob Clark <robdclark@chromium.org> Acked-by: Christian König <christian.koenig@amd.com> Link: https://lore.kernel.org/r/20210728010632.2633470-13-robdclark@gmail.com Signed-off-by: Rob Clark <robdclark@chromium.org>
2021-06-23drm/msm: deprecate MSM_BO_UNCACHED (map as writecombine instead)Jonathan Marek1-1/+1
There shouldn't be any reason to ever use uncached over writecombine, so just use writecombine for MSM_BO_UNCACHED. Note: userspace never used MSM_BO_UNCACHED anyway Signed-off-by: Jonathan Marek <jonathan@marek.ca> Acked-by: Jordan Crouse <jordan@cosmicpenguin.net> Link: https://lore.kernel.org/r/20210423190833.25319-6-jonathan@marek.ca Signed-off-by: Rob Clark <robdclark@chromium.org>
2021-06-23drm/msm: add MSM_BO_CACHED_COHERENTJonathan Marek1-3/+2
Add a new cache mode for creating coherent host-cached BOs. Signed-off-by: Jonathan Marek <jonathan@marek.ca> Reviewed-by: Jordan Crouse <jcrouse@codeaurora.org> Link: https://lore.kernel.org/r/20210423190833.25319-5-jonathan@marek.ca Signed-off-by: Rob Clark <robdclark@chromium.org>
2021-04-07drm/msm: Add param for userspace to query suspend countRob Clark1-0/+1
Performance counts, and ALWAYS_ON counters used for capturing GPU timestamps, lose their state across suspend/resume cycles. Userspace tooling for performance monitoring needs to be aware of this. For example, after a suspend userspace needs to recalibrate it's offset between CPU and GPU time. Signed-off-by: Rob Clark <robdclark@chromium.org> Acked-by: Jordan Crouse <jordan@cosmicpenguin.net> Link: https://lore.kernel.org/r/20210325012358.1759770-3-robdclark@gmail.com Signed-off-by: Rob Clark <robdclark@chromium.org>
2020-07-15drm: msm_drm.h: delete duplicated words in commentsRandy Dunlap1-2/+2
Drop the doubled word "to" in comments. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: David Airlie <airlied@linux.ie> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: dri-devel@lists.freedesktop.org Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20200715052349.23319-6-rdunlap@infradead.org
2020-05-18drm/msm: Add syncobj support.Bas Nieuwenhuizen1-1/+23
This 1) Enables core DRM syncobj support. 2) Adds options to the submission ioctl to wait/signal syncobjs. Just like the wait fence fd, this does inline waits. Using the scheduler would be nice but I believe it is out of scope for this work. Support for timeline syncobjs is implemented and the interface is ready for it, but I'm not enabling it yet until there is some code for turnip to use it. The reset is mostly in there because in the presence of waiting and signalling the same semaphores, resetting them after signalling can become very annoying. v2: - Fixed style issues - Removed a cleanup issue in a failure case - Moved to a copy_from_user per syncobj v3: - Fixed a missing declaration introduced in v2 - Reworked to use ERR_PTR/PTR_ERR - Simplified failure gotos. Used by: https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/2769 Signed-off-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl> Reviewed-by: Jordan Crouse <jcrouse@codeaurora.org> Signed-off-by: Rob Clark <robdclark@chromium.org>
2019-04-19drm/msm/gpu: Add submit queue queriesJordan Crouse1-0/+12
Add the capability to query information from a submit queue. The first available parameter is for querying the number of GPU faults (hangs) that can be attributed to the queue. This is useful for implementing context robustness. A user context can regularly query the number of faults to see if it is responsible for any and if so it can invalidate itself. This is also helpful for testing by confirming to the user driver if a particular command stream caused a fault (or not as the case may be). Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org> Signed-off-by: Rob Clark <robdclark@chromium.org>
2019-04-19drm/msm: add param to retrieve # of GPU faults (global)Rob Clark1-0/+1
For KHR_robustness, userspace wants to know two things, the count of GPU faults globally, and the count of faults attributed to a given context. This patch providees the former, and the next patch provides the latter. Signed-off-by: Rob Clark <robdclark@chromium.org> Reviewed-by: Jordan Crouse <jcrouse@codeaurora.org>
2019-04-19drm/msm/gpu: add per-process pagetables paramRob Clark1-0/+1
For now it always returns '0' (false), but once the iommu work is in place to enable per-process pagetables we can update the value returned. Userspace needs to know this to make an informed decision about exposing KHR_robustness. Signed-off-by: Rob Clark <robdclark@chromium.org> Reviewed-by: Jordan Crouse <jcrouse@codeaurora.org>
2018-12-11drm/msm: add uapi to get/set debug nameRob Clark1-0/+2
Add UAPI to get/set GEM objects' debug name. Signed-off-by: Rob Clark <robdclark@gmail.com>
2018-12-11drm/msm: rework GEM_INFO ioctlRob Clark1-5/+13
Prep work to add a way to get/set the GEM objects debug name. Signed-off-by: Rob Clark <robdclark@gmail.com>
2018-12-11drm/msm/gpu: add submit flag to hint which buffers should be dumpedRob Clark1-1/+4
To lower CPU overhead, future userspace will be switching to pinning iova and avoiding the use of relocs, and only include cmds table entries for IB1 level cmdstream (but not IB2 or state-groups). This leaves the kernel unsure what to dump for rd/hangrd cmdstream dumping. So add a MSM_SUBMIT_BO_DUMP flag so userspace can indicate buffers that contain cmdstream (or are otherwise important to dump). Signed-off-by: Rob Clark <robdclark@gmail.com>
2018-02-20drm/msm: add sudo flag to submit ioctlRob Clark1-0/+2
This flags cause cmdstream to be executed from the ringbuffer (RB) instead of IB1. Normally not something you'd ever want to do, but it is super useful for firmware debugging. Hidden behind CAP_SYS_RAWIO and a default=n kconfig option which depends on EXPERT (and has a suitably scary warning), to prevent it from being used on accident. Signed-off-by: Rob Clark <robdclark@gmail.com>
2017-10-28drm/msm: Add a parameter query for the number of ringbuffersJordan Crouse1-0/+1
In order to manage ringbuffer priority to its fullest userspace should know how many ringbuffers it has to work with. Add a parameter to return the number of active rings. Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org> Signed-off-by: Rob Clark <robdclark@gmail.com>
2017-10-28drm/msm: Support multiple ringbuffersJordan Crouse1-0/+1
Add the infrastructure to support the idea of multiple ringbuffers. Assign each ringbuffer an id and use that as an index for the various ring specific operations. The biggest delta is to support legacy fences. Each fence gets its own sequence number but the legacy functions expect to use a unique integer. To handle this we return a unique identifier for each submission but map it to a specific ring/sequence under the covers. Newer users use a dma_fence pointer anyway so they don't care about the actual sequence ID or ring. The actual mechanics for multiple ringbuffers are very target specific so this code just allows for the possibility but still only defines one ringbuffer for each target family. Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org> Signed-off-by: Rob Clark <robdclark@gmail.com>
2017-10-28drm/msm: Add per-instance submit queuesJordan Crouse1-0/+22
Currently the behavior of a command stream is provided by the user application during submission and the application is expected to internally maintain the settings for each 'context' or 'rendering queue' and specify the correct ones. This works okay for simple cases but as applications become more complex we will want to set context specific flags and do various permission checks to allow certain contexts to enable additional privileges. Add kernel-side submit queues to be analogous to 'contexts' or 'rendering queues' on the application side. Each file descriptor instance will maintain its own list of queues. Queues cannot be shared between file descriptors. For backwards compatibility context id '0' is defined as a default context specifying no priority and no special flags. This is intended to be the usual configuration for 99% of applications so that a garden variety application can function correctly without creating a queue. Only those applications requiring the specific benefit of different queues need create one. Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org> Signed-off-by: Rob Clark <robdclark@gmail.com>
2017-08-02drm/msm: Remove __user from __u64 data typesJordan Crouse1-3/+3
__user should be used to identify user pointers and not __u64 variables containing pointers. Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org> Signed-off-by: Rob Clark <robdclark@gmail.com>
2017-06-16drm/msm: Add hint to DRM_IOCTL_MSM_GEM_INFO to return an object IOVAJordan Crouse1-2/+6
Modify the 'pad' member of struct drm_msm_gem_info to 'flags'. If the user sets 'flags' to non-zero it means that they want a IOVA for the GEM object instead of a mmap() offset. Return the iova in the 'offset' member. Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org> [robclark: s/hint/flags in commit msg] Signed-off-by: Rob Clark <robdclark@gmail.com>
2017-06-16drm/msm: Remove DRM_MSM_NUM_IOCTLSJordan Crouse1-1/+0
The ioctl array is sparsely populated but the compiler will make sure that it is sufficiently sized for all the values that we have so we can safely use ARRAY_SIZE() instead of having a constantly changing #define in the uapi header. Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org> Signed-off-by: Rob Clark <robdclark@gmail.com>
2017-04-08drm/msm: Add MSM_PARAM_GMEM_BASEJordan Crouse1-0/+1
User space needs to know where the GMEM whole starts so that they can set up the addressing correctly. Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org> Signed-off-by: Rob Clark <robdclark@gmail.com>
2016-11-26drm/msm: update uapi header licenseRob Clark1-9/+16
The same file in libdrm is, as is the tradition with the rest of libdrm, etc, using an MIT license. To avoid complications in the future with sync'ing the uapi header to libdrm, lets fix the license mismatch now before there are any non-trivial commits from someone other than myself. Cc: Emil Velikov <emil.l.velikov@gmail.com> Cc: Gabriel Laskar <gabriel@lse.epita.fr> Cc: Mikko Rapeli <mikko.rapeli@iki.fi> Signed-off-by: Rob Clark <robdclark@gmail.com> Acked-by: Emil Velikov <emil.l.velikov@gmail.com>
2016-09-16drm/msm: submit support for out-fencesRob Clark1-1/+3
Signed-off-by: Rob Clark <robdclark@gmail.com>
2016-09-16drm/msm: submit support for in-fencesRob Clark1-2/+7
Signed-off-by: Rob Clark <robdclark@gmail.com>
2016-09-16drm/msm: extend the submit ioctl to pass in flagsRob Clark1-1/+14
We'll want to be able to pass in flags, such as asking for explicit fencing, and possibly other things down the road. Fortunately we don't need a full 32b for the pipe-id. So use the upper 16 bits for flags (which could be extended or reduced later if needed, so start adding flags from the high bits). Since anything with the upper bits set would not be a valid pipe-id, an old userspace would not set any of the upper bits, and an old kernel would reject it as an invalid pipe-id. Signed-off-by: Rob Clark <robdclark@gmail.com>
2016-07-16drm/msm: add madvise ioctlRob Clark1-1/+24
Doesn't do anything too interesting until we wire up shrinker. Pretty much lifted from i915. Signed-off-by: Rob Clark <robdclark@gmail.com>
2016-05-13drm/msm: add extern C guard for the UAPI headerEmil Velikov1-0/+8
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com> Acked-by: Rob Clark <robdclark@gmail.com> (over irc)
2016-03-03drm/msm: add timestamp paramRob Clark1-0/+1
We need this for GL_TIMESTAMP queries. Note: currently only supported on a4xx.. a3xx doesn't have this always-on counter. I think we could emulate it with the one CP counter that is available, but for now it is of limited usefulness on a3xx (since we can't seem to do time-elapsed queries in any sane way with the existing firmware on a3xx, and if you are trying to do profiling on a tiler you want time-elapsed). We can add that later if it becomes useful. Signed-off-by: Rob Clark <robdclark@gmail.com>
2016-02-10drm/msm: add max-freq gpu param to uapiRob Clark1-0/+1
We need this in userspace for interpreting some of the perf ctrs. Note possibly not quite sufficient if we had some frequency mgmt approach other than race-to-idle. Not really sure what the best thing to do if we did. Although displaying results as a percentage of max frequence seems sensible(ish) if we did. Signed-off-by: Rob Clark <robdclark@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
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