/* * 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 */ };
/* Valid flags to pass to drm_panfrost_create_bo */ #define PANFROST_BO_NOEXEC 1 #define PANFROST_BO_HEAP 2
/** * struct drm_panfrost_create_bo - ioctl argument for creating Panfrost BOs. * * The flags argument is a bit mask of PANFROST_BO_* flags. */ 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; };
/** * 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; };
/* 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 */ };
/* Definitions for coredump decoding in user space */ #define PANFROSTDUMP_MAJOR 1 #define PANFROSTDUMP_MINOR 0
/* * This structure is the native endianness of the dumping machine, tools can * detect the endianness by looking at the value in 'magic'. */ struct panfrost_dump_object_header { __u32 magic; __u32 type; __u32 file_size; __u32 file_offset;