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panfrost_drm.h
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/* SPDX-License-Identifier: MIT */ /* * Copyright © 2014-2018 Broadcom * Copyright © 2019 Collabora ltd. */ #ifndef _PANFROST_DRM_H_ #define _PANFROST_DRM_H_ #include "drm.h" #if defined(__cplusplus) extern "C" { #endif #define DRM_PANFROST_SUBMIT 0x00 #define DRM_PANFROST_WAIT_BO 0x01 #define DRM_PANFROST_CREATE_BO 0x02 #define DRM_PANFROST_MMAP_BO 0x03 #define DRM_PANFROST_GET_PARAM 0x04 #define DRM_PANFROST_GET_BO_OFFSET 0x05 #define DRM_PANFROST_PERFCNT_ENABLE 0x06 #define DRM_PANFROST_PERFCNT_DUMP 0x07 #define DRM_PANFROST_MADVISE 0x08 #define DRM_IOCTL_PANFROST_SUBMIT DRM_IOW(DRM_COMMAND_BASE + DRM_PANFROST_SUBMIT, struct drm_panfrost_submit) #define DRM_IOCTL_PANFROST_WAIT_BO DRM_IOW(DRM_COMMAND_BASE + DRM_PANFROST_WAIT_BO, struct drm_panfrost_wait_bo) #define DRM_IOCTL_PANFROST_CREATE_BO DRM_IOWR(DRM_COMMAND_BASE + DRM_PANFROST_CREATE_BO, struct drm_panfrost_create_bo) #define DRM_IOCTL_PANFROST_MMAP_BO DRM_IOWR(DRM_COMMAND_BASE + DRM_PANFROST_MMAP_BO, struct drm_panfrost_mmap_bo) #define DRM_IOCTL_PANFROST_GET_PARAM DRM_IOWR(DRM_COMMAND_BASE + DRM_PANFROST_GET_PARAM, struct drm_panfrost_get_param) #define DRM_IOCTL_PANFROST_GET_BO_OFFSET DRM_IOWR(DRM_COMMAND_BASE + DRM_PANFROST_GET_BO_OFFSET, struct drm_panfrost_get_bo_offset) #define DRM_IOCTL_PANFROST_MADVISE DRM_IOWR(DRM_COMMAND_BASE + DRM_PANFROST_MADVISE, struct drm_panfrost_madvise) /* * Unstable ioctl(s): only exposed when the unsafe unstable_ioctls module * param is set to true. * All these ioctl(s) are subject to deprecation, so please don't rely on * them for anything but debugging purpose. */ #define DRM_IOCTL_PANFROST_PERFCNT_ENABLE DRM_IOW(DRM_COMMAND_BASE + DRM_PANFROST_PERFCNT_ENABLE, struct drm_panfrost_perfcnt_enable) #define DRM_IOCTL_PANFROST_PERFCNT_DUMP DRM_IOW(DRM_COMMAND_BASE + DRM_PANFROST_PERFCNT_DUMP, struct drm_panfrost_perfcnt_dump) #define PANFROST_JD_REQ_FS (1 << 0) /** * struct drm_panfrost_submit - ioctl argument for submitting commands to the 3D * engine. * * This asks the kernel to have the GPU execute a render command list. */ struct drm_panfrost_submit { /** Address to GPU mapping of job descriptor */ __u64 jc; /** An optional array of sync objects to wait on before starting this job. */ __u64 in_syncs; /** Number of sync objects to wait on before starting this job. */ __u32 in_sync_count; /** An optional sync object to place the completion fence in. */ __u32 out_sync; /** Pointer to a u32 array of the BOs that are referenced by the job. */ __u64 bo_handles; /** Number of BO handles passed in (size is that times 4). */ __u32 bo_handle_count; /** A combination of PANFROST_JD_REQ_* */ __u32 requirements; }; /** * struct drm_panfrost_wait_bo - ioctl argument for waiting for * completion of the last DRM_PANFROST_SUBMIT on a BO. * * This is useful for cases where multiple processes might be * rendering to a BO and you want to wait for all rendering to be * completed. */ struct drm_panfrost_wait_bo { __u32 handle; __u32 pad; __s64 timeout_ns; /* absolute */ }; #define PANFROST_BO_NOEXEC 1 #define PANFROST_BO_HEAP 2 /** * struct drm_panfrost_create_bo - ioctl argument for creating Panfrost BOs. * * There are currently no values for the flags argument, but it may be * used in a future extension. */ struct drm_panfrost_create_bo { __u32 size; __u32 flags; /** Returned GEM handle for the BO. */ __u32 handle; /* Pad, must be zero-filled. */ __u32 pad; /** * Returned offset for the BO in the GPU address space. This offset * is private to the DRM fd and is valid for the lifetime of the GEM * handle. * * This offset value will always be nonzero, since various HW * units treat 0 specially. */ __u64 offset; }; /** * struct drm_panfrost_mmap_bo - ioctl argument for mapping Panfrost BOs. * * This doesn't actually perform an mmap. Instead, it returns the * offset you need to use in an mmap on the DRM device node. This * means that tools like valgrind end up knowing about the mapped * memory. * * There are currently no values for the flags argument, but it may be * used in a future extension. */ struct drm_panfrost_mmap_bo { /** Handle for the object being mapped. */ __u32 handle; __u32 flags; /** offset into the drm node to use for subsequent mmap call. */ __u64 offset; }; enum drm_panfrost_param { DRM_PANFROST_PARAM_GPU_PROD_ID, DRM_PANFROST_PARAM_GPU_REVISION, DRM_PANFROST_PARAM_SHADER_PRESENT, DRM_PANFROST_PARAM_TILER_PRESENT, DRM_PANFROST_PARAM_L2_PRESENT, DRM_PANFROST_PARAM_STACK_PRESENT, DRM_PANFROST_PARAM_AS_PRESENT, DRM_PANFROST_PARAM_JS_PRESENT, DRM_PANFROST_PARAM_L2_FEATURES, DRM_PANFROST_PARAM_CORE_FEATURES, DRM_PANFROST_PARAM_TILER_FEATURES, DRM_PANFROST_PARAM_MEM_FEATURES, DRM_PANFROST_PARAM_MMU_FEATURES, DRM_PANFROST_PARAM_THREAD_FEATURES, DRM_PANFROST_PARAM_MAX_THREADS, DRM_PANFROST_PARAM_THREAD_MAX_WORKGROUP_SZ, DRM_PANFROST_PARAM_THREAD_MAX_BARRIER_SZ, DRM_PANFROST_PARAM_COHERENCY_FEATURES, DRM_PANFROST_PARAM_TEXTURE_FEATURES0, DRM_PANFROST_PARAM_TEXTURE_FEATURES1, DRM_PANFROST_PARAM_TEXTURE_FEATURES2, DRM_PANFROST_PARAM_TEXTURE_FEATURES3, DRM_PANFROST_PARAM_JS_FEATURES0, DRM_PANFROST_PARAM_JS_FEATURES1, DRM_PANFROST_PARAM_JS_FEATURES2, DRM_PANFROST_PARAM_JS_FEATURES3, DRM_PANFROST_PARAM_JS_FEATURES4, DRM_PANFROST_PARAM_JS_FEATURES5, DRM_PANFROST_PARAM_JS_FEATURES6, DRM_PANFROST_PARAM_JS_FEATURES7, DRM_PANFROST_PARAM_JS_FEATURES8, DRM_PANFROST_PARAM_JS_FEATURES9, DRM_PANFROST_PARAM_JS_FEATURES10, DRM_PANFROST_PARAM_JS_FEATURES11, DRM_PANFROST_PARAM_JS_FEATURES12, DRM_PANFROST_PARAM_JS_FEATURES13, DRM_PANFROST_PARAM_JS_FEATURES14, DRM_PANFROST_PARAM_JS_FEATURES15, DRM_PANFROST_PARAM_NR_CORE_GROUPS, DRM_PANFROST_PARAM_THREAD_TLS_ALLOC, DRM_PANFROST_PARAM_AFBC_FEATURES, }; struct drm_panfrost_get_param { __u32 param; __u32 pad; __u64 value; }; /** * Returns the offset for the BO in the GPU address space for this DRM fd. * This is the same value returned by drm_panfrost_create_bo, if that was called * from this DRM fd. */ struct drm_panfrost_get_bo_offset { __u32 handle; __u32 pad; __u64 offset; }; struct drm_panfrost_perfcnt_enable { __u32 enable; /* * On bifrost we have 2 sets of counters, this parameter defines the * one to track. */ __u32 counterset; }; struct drm_panfrost_perfcnt_dump { __u64 buf_ptr; }; /* madvise provides a way to tell the kernel in case a buffers contents * can be discarded under memory pressure, which is useful for userspace * bo cache where we want to optimistically hold on to buffer allocate * and potential mmap, but allow the pages to be discarded under memory * pressure. * * Typical usage would involve madvise(DONTNEED) when buffer enters BO * cache, and madvise(WILLNEED) if trying to recycle buffer from BO cache. * In the WILLNEED case, 'retained' indicates to userspace whether the * backing pages still exist. */ #define PANFROST_MADV_WILLNEED 0 /* backing pages are needed, status returned in 'retained' */ #define PANFROST_MADV_DONTNEED 1 /* backing pages not needed */ struct drm_panfrost_madvise { __u32 handle; /* in, GEM handle */ __u32 madv; /* in, PANFROST_MADV_x */ __u32 retained; /* out, whether backing store still exists */ }; #if defined(__cplusplus) } #endif #endif /* _PANFROST_DRM_H_ */