/** * get various information of the GPU
*/ struct drm_lima_get_param {
__u32 param; /* in, value in enum drm_lima_param */
__u32 pad; /* pad, must be zero */
__u64 value; /* out, parameter value */
};
/* * heap buffer dynamically increase backup memory size when GP task fail * due to lack of heap memory. size field of heap buffer is an up bound of * the backup memory which can be set to a fairly large value.
*/ #define LIMA_BO_FLAG_HEAP (1 << 0)
/** * create a buffer for used by GPU
*/ struct drm_lima_gem_create {
__u32 size; /* in, buffer size */
__u32 flags; /* in, buffer flags */
__u32 handle; /* out, GEM buffer handle */
__u32 pad; /* pad, must be zero */
};
/** * get information of a buffer
*/ struct drm_lima_gem_info {
__u32 handle; /* in, GEM buffer handle */
__u32 va; /* out, virtual address mapped into GPU MMU */
__u64 offset; /* out, used to mmap this buffer to CPU */
};
/* buffer information used by one task */ struct drm_lima_gem_submit_bo {
__u32 handle; /* in, GEM buffer handle */
__u32 flags; /* in, buffer read/write by GPU */
};
#define LIMA_GP_FRAME_REG_NUM 6
/* frame used to setup GP for each task */ struct drm_lima_gp_frame {
__u32 frame[LIMA_GP_FRAME_REG_NUM];
};
/** * submit a task to GPU * * User can always merge multi sync_file and drm_syncobj * into one drm_syncobj as in_sync[0], but we reserve * in_sync[1] for another task's out_sync to avoid the * export/import/merge pass when explicit sync.
*/ struct drm_lima_gem_submit {
__u32 ctx; /* in, context handle task is submitted to */
__u32 pipe; /* in, which pipe to use, GP/PP */
__u32 nr_bos; /* in, array length of bos field */
__u32 frame_size; /* in, size of frame field */
__u64 bos; /* in, array of drm_lima_gem_submit_bo */
__u64 frame; /* in, GP/PP frame */
__u32 flags; /* in, submit flags */
__u32 out_sync; /* in, drm_syncobj handle used to wait task finish after submission */
__u32 in_sync[2]; /* in, drm_syncobj handle used to wait before start this task */
};
/** * wait pending GPU task finish of a buffer
*/ struct drm_lima_gem_wait {
__u32 handle; /* in, GEM buffer handle */
__u32 op; /* in, CPU want to read/write this buffer */
__s64 timeout_ns; /* in, wait timeout in absulute time */
};
/** * create a context
*/ struct drm_lima_ctx_create {
__u32 id; /* out, context handle */
__u32 _pad; /* pad, must be zero */
};
/** * free a context
*/ struct drm_lima_ctx_free {
__u32 id; /* in, context handle */
__u32 _pad; /* pad, must be zero */
};
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